WARNING: Aftermarket Replacement Digitizers

ajtroxell

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Dec 9, 2011
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So about three months ago I dropped my phone, at a time when I didn't have my case on it. And cracked the digitizer. It landed face down on a small pebble in my driveway. Go figure right? Broke is pretty good, but it was completely my fault, and I don't carry insurance so the next option was to replace the digitizer myself. So I looked around and looked around, watched some videos and finally ordered one from RepairsUniverse.com. They had a really great instructional video, decent prices, not super cheap and not real expensive, and the digitizer had the adhesive already applied to it.

Got my digitizer in the mail, and that night replaced my broken one. Super simple process, worked great. And then all of a sudden, the next day when I got decent use out of the phone. The capacitive buttons, specifically the "Search/Bing/now Cortana" button would activate randomly, sometimes 20-30 presses within seconds. So I get ahold of customer support, they said it sounds like a defective digitizer, and sent me a new one. A month or so go by before I have time to install this one. Same scenario, random presses.

So I do some research and can only find a couple of other cases of this. I email customer support again, and they state that it sounds like a problem with my phones compatibility with the digitizer. I can understand this, as some aftermarket parts are crap. But then I realize that the Amber update had come out the latter part of last year. So this tells me that the Amber update is what causes the incompatibility between their aftermarket digitizers and the 920, which continues into 8.1. So it isnt a microsoft thing, but a junk hardware/firmware that isnt up to par with anything post Amber update.

So finally they are giving a me full refund and ill have to see if I can manage to find either a genuine OEM digitizer, or order the whole front assembly, which is about $75. Still cheaper than a new phone, and I love my 920 dearly so I get to hang on to her for a while longer.

Repairs Universe handled things with me great and i'd recommend them with any other parts, but I did ask them to place a warning on their site about compatibility post Amber update, as this could have saved me a lot of time and may help any of is 920 owners in the future.

​Just thought i'd share my experience with you guys.
 
Solution!

I also dropped my Lumia 920, or more like shot it out of my hand. It was like a watermelon seed since Nokia decided to make the casing a smooth plastic so it can be all slippery in a sweaty hand (I was running, ok?) The phone landed face down and spiderwebbed in 3 places. Nice. I put packing tape across the jagged glass so I could still use it while waiting for repair parts.

I ordered a non-oem replacement part from the repairs universe site and installed it according to their 6 minute video on the youtubes. (I also advise against removing the button flex circuit - it is not necessary.) After reassembling my phone it worked for about 2 minutes. My joy dropped into that depressing feeling of having wasted a day. I tried reseating the connectors I had removed during the installation, but had no luck getting the phone to get past the AT&T logo screen.

After some microscope inspection work and resoldering some parts I powered on the phone without the case or battery retainer clip. It powered up fine and I could use the touchscreen. YAY! So I then put it all together and it would lockup at the AT&T logo. After several frustrating iterations, I finally discovered the reason that the phone would boot without the case or battery clip in place, but would fail after installing and tightening the clip screw. -- The non-oem changes in electronic component layout seems to interfere just enough with the underlaying components to contact and short the new digitizer chip on the cable.

My solution: one piece of 1/8" by 3/16" Scotch tape placed under the digitizer flex cable for some electrical insulation action. Savings: $300.

At least in my case, the problem is simply about the layout and interference of the aftermarket digitizer components. Crazy.

I hope my discovery can help someone else. Good luck!


--
"If you didn't build it with your own two hands, it's not really yours" Tim the-toolman Taylor
 

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