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Repair tips needed badly !

crea2k

Lurker
Hi, I need a few tips here to see exactly where im going wrong.......
I run a little repair business on the side, most of the things I get are screen replacements etc. Iv done Ipads, Iphones, HTC's etc and never had a problem, but I seem to be having the same problem re occur with Galaxy S3's.
I offer the glass changes and remove the glass very carefully with a heatgun and plastic 'razor blades', and blunt metal pry tools, so not to do any damage to the the digitizer at all.
The glass comes off and I then clean the screen with a soft cloth with an electrical solvent, apply the new adhesive strips round the edge and put the glass on and all works just fine..........
Iv done about 5 of these so far and out of the five 3 have become faulty a few days after the repair. What is happening is if the phone is left for a few mins, screen turned on, that sometimes....not always the whole screen, or in one case half the screen would freeze and become totally unresponsive. The buttons on the side of the phone would still work fine and if you held the power button and turned it off and on it would work fine again then, but iv had it freeze on the service app before with nothing running.
The ones that do work, the one that really comes to mind hardly had any adhesive on the screen at all so I hardly needed to clean it, so im not sure if the electrical solvent is dissolving the glue where the flex is bonded to the touch screen at the bottom of the screen and is causing this problem.
Has anyone else come across this problem and are there any parts of the screen to really steer clear of when cleaning before applying the new glass?.:confused:
 
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