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Help So I took my Defy apart last night...

colnago

Android Expert
Nov 17, 2009
3,091
218
...the call of the exposed Torx screws (#5) was just too much. I wanted to see if I could get to the antennae test pots, and improve reception,

http://androidforums.com/motorola-droid/19985-homemade-antenna-breakthrough-3g-1x-switching.html

...since there are a few buildings in my town where signal has a hard time
penetrating. Unfortunately, my results were not as good on the Defy as the Droid. I'll keep trying to connect to other antennae, as the (2) pots exposed by removing the plugs (see pic #4) did not seem to help. When attaching wire to the pot on the left, my wifi signal seemed to improve by about 10dBm, but results were sporadic. Ultimately, I'd like to sure up the GSM antenna with more internal "wire".


Defy2.jpg


Defy3.jpg


Defy4.jpg
 
If I can offer one caveat, when separating the case, try to lift the circuit board (i.e. USB port/board) out, along with the white frame. The port extends into the white frame making it very difficult to just remove the white frame on its own.

Also, there are (2) tan colored rubber grommets/bushings that are resting in the board, not mounted in any way. If the case "pops" open, just make sure they don't fly out...like they did with me.

Rocker key/power key just slide in place, and are not held in by anything. The whole process is pretty straight forward.
 
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varying the antenna length alters the resonating frequency of the antenna.

when you're extend of shorten it even half a millimeter the resonating frequency is drastically altered.

that's why the caps, not pots are there so when they assemble the phones, they optimize the resonant frequencies by tweaking the caps with a fixed frequency on the bench.

did you see any telltales that were broken when you opened it up?

i'm very reluctant to open the puppy up as it works so darn well for me.

remember, if it aint broke don't fix it.
 
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...remember, if it aint broke don't fix it.

No doubt.

Everything was "clean" inside, and functioning properly after the re-assemble. For the most part reception is really good, save for the few spots I frequent where it is weak. I was worried that there may have been some chemical seal that would be irreversibly broken if the case were opened...non-issue. There are rubber surrounds that seal the screen, and not affected when taking apart, but everything is as you see it in the pics. Just bolt back together.

I'm reluctant to give up my AT&T phone, and use the Defy on AT&T all the time, as the unlimited minutes plan on T-Mo is so much cheaper. i just wanted to sure up the reception so that I will always have signal, given that I'm on call 24/7. That and I'm not sure how not having 1900 band 3G will play out in my area.
 
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Hey, off topic (sorry). Can you see what type of CPU is in the Defy? OMAP 3610 or 3630?

I pulled up the sticker with the IMEI number, and that thicker black protection (?) sticker is covering the main chipset...not able to tell. I'll post "larger" pics tonight. If you guys really want to know, Torx screw #5 will remove all (9) screws. ;)
 
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Hey I recently purchased the Motorola Defy and stupidly broke my touchscreen :(. Also I had did not buy the insurance on the phone and T-mobile wants to charge me $400's for a fix! Is there any way to take out the touchscreen and replace it with a new one without breaking or harming any of the internal mechanisms :thinking:?
 
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There is a website in China, vague I know, but my co-worker actually ordered from there without issue, which sells all kinds of replacement parts, including panels for my Nokia N900. $80 for a panel beats having to buy a replacement phone any day. I'm sure the Defy's screen could be easily sourced and replaced. It would basically snap into place within the black housing pictured above, and there is only a ribbon cable that would snap onto the mainboard.
 
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There is a website in China, vague I know, but my co-worker actually ordered from there without issue, which sells all kinds of replacement parts, including panels for my Nokia N900. $80 for a panel beats having to buy a replacement phone any day. I'm sure the Defy's screen could be easily sourced and replaced. It would basically snap into place within the black housing pictured above, and there is only a ribbon cable that would snap onto the mainboard.

Okay will do. Thanks
 
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