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Old June 8th, 2010, 09:12 AM   #1 (permalink)
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Question Blank screen but phone still on, hardware or software?

Several times now my Desire's screen has just stayed black when pressing the power key to unlock it. It's like it's in a deep sleep with no way to wake it.

If you call it the screen will not light up but the phone will either ring with no way of answering it or just flash the missed call light. The call can still be silenced or rejected with the buttons.

So my question is this a hardware or software issue? I'm inclined to think software because pulling the battery then rebooting solves it, until it happens again, sometimes the same day others a few days later.

I always switch the phone off at night to give it a fresh start each day. I do not use any task killers or obscure apps.

Phone has minimal virgin mobile UK branding on it, and running firmware 1.15.405.4 with no option to update to the newly released version.

Thanks in advance.

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Old June 8th, 2010, 09:43 AM   #2 (permalink)
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Since a battery pull seems to solve it for a little while it is possible you have something installed that causes the problem, unless you start eliminating suspects you will never really know. A full factory reset might be a good idea and then install minimal apps and leave it be to see if it does again.

If it does you can get it replaced, but you need to find out if it is something you have installed causing the problem because if you get another phone and install the same things you will be going around in circles.
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Old June 8th, 2010, 10:01 AM   #3 (permalink)
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Thanks for the advice.

Is this a common problem that others are suffering from too? Anyone managed to track down the app that is causing it?

All the apps I have are popular well known apps and very little that runs constantly. My prime suspect is juice defender (because it activates/deactivates on a screen toggle) but it has been working perfectly for three weeks before I ever saw this issue.
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Old June 8th, 2010, 10:08 AM   #4 (permalink)
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I'd remove JD, I've always found that program more of a hindrance than a help.
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Old June 8th, 2010, 10:13 AM   #5 (permalink)
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I'm reluctant to do that as I find it very useful, plus the fact the phone has been fine with it installed for weeks. I hate having the data connection on constantly and I find JD makes a big difference to my battery life.

Is there a free alternative to JD that disables the connection when the screen is off? I don't want to use the manual toggle every time.

At first I did think the double twist media player was the cause but no improvement after removing that.
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Old June 8th, 2010, 10:40 AM   #6 (permalink)
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Quote:
Originally Posted by confused-data View Post
Thanks for the advice.

Is this a common problem that others are suffering from too? Anyone managed to track down the app that is causing it?

All the apps I have are popular well known apps and very little that runs constantly. My prime suspect is juice defender (because it activates/deactivates on a screen toggle) but it has been working perfectly for three weeks before I ever saw this issue.
Never had this. I leave my phone on always and never turn off. Not once has the screen failed to turn on. It does indeed sound like a software problem as, if the screen was broken, you wouldn't expect a reboot to solve it. If all else fails, backup and hard reset.
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Old June 30th, 2010, 12:58 PM   #7 (permalink)
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Quote:
Originally Posted by confused-data View Post
Thanks for the advice.

Is this a common problem that others are suffering from too? Anyone managed to track down the app that is causing it?

All the apps I have are popular well known apps and very little that runs constantly. My prime suspect is juice defender (because it activates/deactivates on a screen toggle) but it has been working perfectly for three weeks before I ever saw this issue.
I've got that problem too, I thought that I am the only one with that problem but if I remove the battery and put it back it doesn't solve the problem for me I contacted HTC support today so I'm waiting for the reply.

Sorry for my bad english
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Old July 1st, 2010, 04:04 AM   #8 (permalink)
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Also got same problem.
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Old July 1st, 2010, 05:04 AM   #9 (permalink)
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Has happened to me once in 2 months, had to pull the battery to solve........ I'm not overly concerned by it.
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Old July 28th, 2010, 05:45 AM   #10 (permalink)
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Default Same problem

Same problem here - happening very frequently. I have three suspects:
1) my new, unbranded microSD card (problem didn't occur before I started using it)
2) Spotify, which is also playing up
3) Juice Defender, having read this thread

I will experiment, but please let me know if you work it out!

Cheers.
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Old July 28th, 2010, 09:23 PM   #11 (permalink)
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Having the same issue and it is very annoying.
Did few factory resets but nothing seems to be working.
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Old July 30th, 2010, 09:45 AM   #12 (permalink)
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Good news are coming on the weekend and I hope it will solve our common problems
Euro HTC Desire to get Froyo this weekend, 720p video capture too - GSMArena.com news
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Old August 17th, 2010, 02:16 AM   #13 (permalink)
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Quote:
Originally Posted by smarczii View Post
I've got that problem too, I thought that I am the only one with that problem but if I remove the battery and put it back it doesn't solve the problem for me I contacted HTC support today so I'm waiting for the reply.

Sorry for my bad english
Hi smarczii,

I'm having the same problem. I've had my Desire for about 3 months now, and I've experienced the screen going blank about 3 times all within the last week. I'm not sure if it's something to do with the SD card, as that's been playing up as well. The phone says it's damaged for some reason, which has also happened 2 or 3 times already. After that, when I reformat the SD card, it starts the problem with the screen. I might try and send them an email myself. If you do get a response from HTC, please post it here. Thanks!
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Old August 26th, 2010, 04:39 PM   #14 (permalink)
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After installing Mapdroyd (the install itself didn't go smoothly which should have been a warning) I tried to install a map, my focus was elsewhere and when I looked back the screen was black, assumed it was just because the phone hadn't been touched for a bit so pressed the power button to see how the map download was going and although the hard buttons along the base lit up the screen stayed black...
A quick google later and I pulled the battery out, removed and reinserted the sd and sim and put the battery back, sealed up the back, turned on and everything loaded up again fine. Un-installed Mapdroyd right away and hopefully wont be having the problem again. I'll post again if I do.
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Old September 12th, 2010, 09:07 PM   #15 (permalink)
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Just had this problem for the first time on my 3 month old Desire. Battery Pull has fixed it ...just hope it doesnt become a regular thing now.

Anyone have to get theirs fixed or replaced due to this? ..just wondering if its a possible hardware issue.
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Old September 14th, 2010, 05:15 AM   #16 (permalink)
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I used to have this problem with 2.1, but after upgrading to 2.2, and installing whatsapp, it's occurrence has increased more than 3 times a day....it's so frustrating. I thought it was an sd card issue, but even after formatting it happens....in fact as i'm typing this reply my screen went dead and I can't get it back on.

Could anyone please enlighten on the problem?

Gonna update Whatsapp and see if it works...if not, will uninstall and see what happens....

sighz
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Old September 20th, 2010, 10:19 AM   #17 (permalink)
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I seem to have the same problem but it only happens when I get a pop up from chomp sms. It shows the popup but everything else is gone behind it. I reply to the msg and then its just black. One time I hit the homescreen and it brought it back, I changed my background it it didn't happen again for a few days but it did it again today. Had to hit the power button then I got my screen back. Seems so weird. Thinking about uninstalling chomp and see how that goes
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Old September 20th, 2010, 10:45 AM   #18 (permalink)
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Originally Posted by scottylook View Post
I seem to have the same problem but it only happens when I get a pop up from chomp sms. It shows the popup but everything else is gone behind it. I reply to the msg and then its just black. One time I hit the homescreen and it brought it back, I changed my background it it didn't happen again for a few days but it did it again today. Had to hit the power button then I got my screen back. Seems so weird. Thinking about uninstalling chomp and see how that goes
I'd give that a go.
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Old September 21st, 2010, 10:33 AM   #19 (permalink)
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Seems like that was it. Looking int he android market Im not the only one. Hope they get it fixed soon
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Old October 19th, 2010, 02:18 AM   #20 (permalink)
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i have this problem too. And my screen goes blank dead like every few hours. Fustrating. Pls help. Anyone knows how?
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Old November 27th, 2010, 02:35 AM   #21 (permalink)
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I'm having the same problem and I got my phone less than a week ago! I rund advanced task killer, astrid, and little else..... what to do?
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Old November 27th, 2010, 03:49 PM   #22 (permalink)
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You can try connecting your phone to a computer via a usb cable, then do an error check and see if there are any errors.
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Old December 7th, 2010, 06:03 PM   #23 (permalink)
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Anyone got a fix for this?
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Old December 20th, 2010, 05:54 PM   #24 (permalink)
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I recently had this same problem on my HTC Desire running Froyo 2.2.
The only way to get out of the "deep sleep" was to remove the battery and restart the phone. However, the problem reappears almost immediately when the phones blanks the screen. Pressing the power button only causes the HTC's hardware buttons to light up but nothing appears on screen.

After some testing and I realised that the problem goes away the moment I removed the microSD! Hence the issues appears to be that Android was not able to read/mount the card correctly and hence exhibits this odd behaviour.

My solution:
1. Backup all contents of the microSD card (including hidden files)
2. Prepare a new card & format it as FAT32 (with checks to ensure no bad sectors etc)
3. Copy all contents to the new card
4. Re-insert into phone and restart
5. Enjoy!!

Hope this helps for those of you having the same problem.

PS. I realised the old microSD has a lot of issues and even reformatting it was not possible.
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Old December 20th, 2010, 05:59 PM   #25 (permalink)
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I recently had this same problem on my HTC Desire running Froyo 2.2.
The only way to get out of the "deep sleep" was to remove the battery and restart the phone. However, the problem reappears almost immediately when the phones blanks the screen. Pressing the power button only causes the HTC's hardware buttons to light up but nothing appears on screen.

After some testing and I realised that the problem goes away the moment I removed the microSD! Hence the issues appears to be that Android was not able to read/mount the card correctly and hence exhibits this odd behaviour.

My solution:
1. Backup all contents of the microSD card (including hidden files)
2. Prepare a new card & format it as FAT32 (with checks to ensure no bad sectors etc)
3. Copy all contents to the new card
4. Re-insert into phone and restart
5. Enjoy!!

Hope this helps for those of you having the same problem.

PS. I realised the old microSD has a lot of issues and even reformatting it was not possible.
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Old December 20th, 2010, 06:15 PM   #26 (permalink)
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I recently had this same problem on my HTC Desire running Froyo 2.2.
The only way to get out of the "deep sleep" was to remove the battery and restart the phone. However, the problem reappears almost immediately when the phones blanks the screen. Pressing the power button only causes the HTC's hardware buttons to light up but nothing appears on screen.

After some testing and I realised that the problem goes away the moment I removed the microSD! Hence the issues appears to be that Android was not able to read/mount the card correctly and hence exhibits this odd behaviour.

My solution:
1. Backup all contents of the microSD card (including hidden files)
2. Prepare a new card & format it as FAT32 (with checks to ensure no bad sectors etc)
3. Copy all contents to the new card
4. Re-insert into phone and restart
5. Enjoy!!

Hope this helps for those of you having the same problem.

PS. I realised the old microSD has a lot of issues and even reformatting it was not possible.
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Old December 28th, 2010, 02:55 AM   #27 (permalink)
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Hi All,
got my Desire since less than two months, and it started to behave as described: the screen would go blank. "Fortunately", by applying slight pressure on the side of the phone, the screen turns on again, which indicated a hardware problem. A first (virtual) look inside the phone at https://fjallfoss.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout =500&calledFromFrame=N&application_id=261070&fcc_i d='NM8PB99400' (check out 'internal photos', and say 'thank you' to the FCC for me ) showed numerous connectors between the boards. It turns out that these connectors may pop out sometimes, leading (among other possible symptoms) to the dark display.
It is relatively easy to repair the phone in this situation, but this VOIDS THE WARRANTY, so what follows it at your own risk ! Use high quality tools, avoid electrostatic discharges, and avoid forcing parts. Attempt to repair it yourself only as the last option (seller or manufacturer not willing to repair it under warranty for instance)
Backup all your data first, just in case. Remove the back plate to access the battery. Place the phone with the battery compartment visible, the camera and audio Jack pointing away from you, like in the FCC document. Remove the battery, the SIM card and the SD card. Remove with a scalpel the two tiny 'VOID' stickers hiding the screws on the upper and lower right corner. If you are careful and lucky, you can remove them without damaging them, and place them back after reassembling the phone. Use a Torx TX5 to remove the four screws on the four corners of the phone, and a small Phillips screwdriver to remove the two screws on the left and right sides. Remove the antenna cover (see 'WWAN Main Antenna' depicted in the FCC document linked above). You can now GENTLY unclip the plastic frame, and access the electronic boards below. There is an additional Phillips screw on the top left corner, holding the board with the audio Jack on it, which you might need to remove as well.
Now it is possible to remove all the electronics, and press the connectors again into their respective sockets. You can now re-assemble the phone. Stick back the 'VOID' stickers if you managed not to damage them (I did not ).
'hope this helps a few of you...
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Old January 5th, 2011, 04:26 PM   #28 (permalink)
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Mate

Thank you so much - you are a genius! All sorted :-D

Cheers
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Old June 7th, 2011, 03:09 AM   #29 (permalink)
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Hi all,
I also had this black screen problem, sometimes more than 5 times a day!
So, after reading the post about tightening up the contacts, I opened up my Desire, removed the battery, SIM and SD card. But then I did not have the correct screwdriver etc, so I reassembled everything back.
And guess what: no black screens since then!

Thanks very much, Hans
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Old June 17th, 2011, 03:18 AM   #30 (permalink)
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Angry Slightly different problem

Hello there,

I have a somehow similar problem with my HTC Desire HD. Yesterday my 16-months old son was "using" the phone. Basically he was rebooting and switching it off.

At some point I managed to recover the phone and now I switch it on, I get the PIN request for the SIM card, unlock pattern, etc. on the screen. However the home screen is black... If I push a button it vibrates, and if keep the search button pushed I get the google voice search and I can even open a browser.

Clicking on home, though, gets me to a blank screen :-(. This is very annoying, I would like to solve it before doing a factory reset. Any clues?

I have tried removing battery, sim and micro sd... without any success.

Thanks for your help,

Sergio
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Old June 29th, 2011, 07:09 AM   #31 (permalink)
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Originally Posted by SergioRuiz View Post
Clicking on home, though, gets me to a blank screen :-(. This is very annoying, I would like to solve it before doing a factory reset. Any clues?
A factory reset solved the problem... it was not so bad in the end :-).

Greetings,

Sergio
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Old July 9th, 2011, 07:39 PM   #32 (permalink)
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I am at a loss!

I rooted 2 weeks ago using (unRevoked 3.21 & CWM 2.5.0.7 S-ON) the guides and FAQ here from stock 2.29.405-5. i didn't do much to begin with, just did a battery stats wipe I read about in a thread somewhwere in order to get better batterylife. No Juice Defender. I also ran the adb-command to install all apps on the SD-card (setInstallLocation 0/2 in adb shell).

Almost right away my phone began to freeze completely. The screen mostly stays on (if it happens when I'm actively doing something on it) for the standard amount of time until it spontaniously goes to sleep. I can sometimes use the powerbutton to wake it up again, but it just shows the frozen screen image. Most of the time, the powerbutton does absolutely nothing except for lighting the hard buttons underneath the screen. It has never been possible to shut the phone off using the power button. My only choice is to pull the battery and reboot.

When the phone freezes up, it appears to be using a very large amount of battery.

I tried to fix this by first preforming a hard reset, then flashing a new ROM (InsertCoin 1.0.8 which I love!) after a full wipe, but the problem persists.

There doesn't seem to be anything to go by. It's irregular in occurence, sometimes lasting for 1 hour, sometimes for 30 sec. It's been getting more frequent, though. Sometimes my phone gets really warm, but it will freeze when it's cool too.

Just to needle me further, it appears to be working perfectly for the last 3 hours without the SIM-card... And recoverymode is okay too (found that out by reading a lot while flashing IC)...

This has me stumped! Hardware/Software? Bad mojo?
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Old July 10th, 2011, 03:41 PM   #33 (permalink)
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I'm at my wits end...

Decided to flash the RUU, to see if the problem persisted. The stock ROM seem to be okay, no probs that I could see. The SD-card was mounted as read-only, which I find wierd.

I reformated it using Gparted, rooted the phone using unREVoked 3.21 S-OFF. Everything went perfectly until I made a nandroid recovery image. That process was equally successful, or so I thought. When rebooting after this the damn phone entered an endless boot loop...

Now I restore the nandroid copy to see what happens...

Edit: for no apparent reason the backup works fine

Now, off to the custom ROMs to flash IC again! Wish me luck...
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Old July 14th, 2011, 08:18 AM   #34 (permalink)
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The same thing has happened to me :-( Sent it off to HTC to try fix but because its had water damage they wont fix it.

The water damage happened in May 2010 and Ive never had any issues with the phone since then and the problem didnt start happening until I dropped it so I very much doubt it is water damage!)

My post is at PLEASE HELP! HTC Desire screen won't turn on after it goes on standby

Not sure what to do now :-(
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Old August 19th, 2011, 08:06 PM   #35 (permalink)
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Talking

After an enormous amount of reading and experimenting, I`ve finally gotten around the problem!

I believe it was a combination of slightly defective/unstable SD-card (from SunDisc; I`ve read that Kingston have better cards) which made the EXT-partition on my SD-card act up, and an incompatability between the ROM (the radio?) and the SIM-card making the phone in some instanses enter a loop requiring me to reenter my SIM card PIN code every ten seconds as long as the SIM card was active...

I repartitioned the SD-card, removing the EXT partition, flashed the Alpharev Oxygen R2 HBoot table, and finally flashed Oxygen 2.2.1. Now I have a phone that I can trust, and plenty of space for apps!
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Old August 26th, 2011, 08:48 AM   #36 (permalink)
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@Flumme. What made you think it could be an imcompatability between the Radio and Sim card?

I only get the phone locking up at work where I have low signal (never happens at home) so I am also suspecting it may have something to do with upgrading the radio? Is there a way to check whether my phone is going into the same loop? I've tried various different ROMs (leedroid and insert coin) and have had the same problem on all of them which is rather frustrating.

I will also now try a different SD card to see if that fixes it. Thanks for your useful info!

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After an enormous amount of reading and experimenting, I`ve finally gotten around the problem!

I believe it was a combination of slightly defective/unstable SD-card (from SunDisc; I`ve read that Kingston have better cards) which made the EXT-partition on my SD-card act up, and an incompatability between the ROM (the radio?) and the SIM-card making the phone in some instanses enter a loop requiring me to reenter my SIM card PIN code every ten seconds as long as the SIM card was active...

I repartitioned the SD-card, removing the EXT partition, flashed the Alpharev Oxygen R2 HBoot table, and finally flashed Oxygen 2.2.1. Now I have a phone that I can trust, and plenty of space for apps!
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Old September 3rd, 2011, 05:58 PM   #37 (permalink)
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I hope it works out for you!!!

I don't remember exactly where I found the thread, possibly on xDA-forum, but there was an israeli guy who seemed to have this problem too. He found out that putting the phone into air plane mode prevented it from going into this loop. Going from there he discovered that it was the SIM-card, since the phone was very stable indeed on Wifi only. Unfortunately, it also prevents you from using your phone as anything but a very small tablet...

I am truly sorry to tell the world that i now seem to have a very expensive paper-weight. It crashed completely a couple of hours ago, and will not respond in any way to anything I do. The only thing that happens is that the LED turns on when I plug it in to charge. If I touch the powerbutton, the LED goes out, and nothing else happens.

My message to you is: RUU and hope that the repair shop will not notice that you've had it rooted! As of now i cannot even do that...

Started a new thread about this http://androidforums.com/desire-support-troubleshooting/407929-true-brick.html
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Old September 12th, 2011, 03:26 AM   #38 (permalink)
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Ive but the same problem, Phone switches on...screen works the cut's off,all sounds and alarms are still working just no display!
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Old October 1st, 2011, 08:30 PM   #39 (permalink)
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There's another fix posted in this thread, post #31: PLEASE HELP! HTC Desire screen won't turn on after it goes on standby

Seems that a broken capacitor will give you the same symptoms.
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Old November 28th, 2011, 02:21 AM   #40 (permalink)
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thx for the tip!
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Old February 18th, 2012, 11:13 AM   #41 (permalink)
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Hi people,

I was having a similar problem - screen was cutting out after every call. Extremely frustrating!

I eventually backtracked through my apps and it seems that Lookout Mobile Security was causing the issue. I've uninstalled it now and everything seems to be ok... (touch wood)

So the app that was supposed to be protecting my phone from bugs and viruses actually messed it up. Sweet, sweet irony...

*EDIT*

So basically, as soon as I posted this I made a call and the same thing happened again. For some reason I had the idea of removing the clear plastic screen protector that came with my phone's case, and as soon as I'd removed it the phone sprung back into life! Seems that the protector was obscuring the proximity sensor near the top of the phone and was causing it to cut out.

I've now reattached the screen protector, using the "Proximity Sensor Finder" app to make sure it doesn't obscure the sensor again. Hopefully that's it this time!
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Old February 23rd, 2012, 03:31 PM   #42 (permalink)
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I had this same problem on my Motorola X. I was getting so frustrated because I work with and sell cell phones all day. I realized my problem had started when I bought a new SD card. I totally forgot to "mount" my SD card when I put it in. I put a new card in this morning and "mounted" it and also formated it just to be safe. We will see how it works but I am almost 100% positive this was why my phone kept going into the black screen. I also could only get it off that screen by taking out the battery and putting it back in. Hope this helps anyone that possibly just put a new SD card into their phone.
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Old July 14th, 2012, 01:48 PM   #43 (permalink)
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****** FIXED******* i have the same problem that my Desire's screen has just stayed black when pressing the power key to unlock it. I found a way without removing battery.. Before raising the ring to unlock we can scroll the notification bar down and can go to settings. Then i added a lock pattern. After that it works fine..try...
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Old August 23rd, 2012, 12:04 PM   #44 (permalink)
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Originally Posted by mr.hachi View Post
Since a battery pull seems to solve it for a little while it is possible you have something installed that causes the problem, unless you start eliminating suspects you will never really know. A full factory reset might be a good idea and then install minimal apps and leave it be to see if it does again.

If it does you can get it replaced, but you need to find out if it is something you have installed causing the problem because if you get another phone and install the same things you will be going around in circles.
I have the black screen after a phone call/voice mail issue as well. VERY FRUSTRATING. I removed the plastic cover and everything seems to work. Thanks to the post for that suggestion. If problem persists, I will remove task killer and look out. Then remove crime city. If none of this works, I will try the clean swipe and try the phone out with the add on applications removed. If this doesn't work, I will tie a rock to it and fire it through the window of the local cell phone provider. I will repost to confirm the culprit of the locked/black screen
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Old November 7th, 2012, 02:39 PM   #45 (permalink)
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Originally Posted by confused-data View Post
Several times now my Desire's screen has just stayed black when pressing the power key to unlock it. It's like it's in a deep sleep with no way to wake it.

If you call it the screen will not light up but the phone will either ring with no way of answering it or just flash the missed call light. The call can still be silenced or rejected with the buttons.

So my question is this a hardware or software issue? I'm inclined to think software because pulling the battery then rebooting solves it, until it happens again, sometimes the same day others a few days later.

I always switch the phone off at night to give it a fresh start each day. I do not use any task killers or obscure apps.

Phone has minimal virgin mobile UK branding on it, and running firmware 1.15.405.4 with no option to update to the newly released version.

Thanks in advance.
i have the same problem if you knwo what is plzz say to me...
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Old August 3rd, 2013, 08:21 AM   #46 (permalink)
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I solved this problem few times by completely opening my HTC Desire Z mobile phone and then reassembling it. Third time, I noticed that the problem is due to looseness of two, out of three, tiny screws at the "camera" button of the mobile set. Therefore, mobile set was not properly pressed and sealed at the "Camera" button and due to some protection by HTC, screen went black. Now I have used new relatively long tiny screws and the problem is solved permanently.
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Old August 3rd, 2013, 08:56 AM   #47 (permalink)
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The original Desire doesn't have a camera button, so probably not exactly the same here. Interesting though
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