No display! Backlight works and phone boots. PLEASE HELP!
Hello, I have gone over just about everything I can think of. Checked in diode mode pins 1,3,8 and 11 all within spec. Replaced chestnut ic. checked for shorted capacitors and diodes (all good) with no luck. Even checked clock lines thinking long screw problems but they were okay. What am I missing?
Another thing I just thought of. When I replaced the chestnut ic the B3 pad broke off. B3 and B4 pads are bridged together on the board and there was just enough of a stub left I had hoped it would make connection. Could the B3 cause no Image if not making connection?? B3 is LCM Boost on the ic. I was thinking if I had backlight then it must be making connection, but now I am not sure?
Sorry, forgot to give you back ground info. Phone has always worked great until battery needed replaced. So I opened it up for the first time and removed screen and installed battery, afterwards had a hard time getting display again kept reinstalling lcd connectors and getting lines in display but finally got it reconnected and working again but every once in awhile lines would show for just a few minutes and disappear. So I figured it was just a bad cable on the lcd screen so I ordered a new screen and never had to install it until one day when I dropped my phone without the case and display went blank. Installed new screen and it didn't work, so replaced chestnut ic and then it started working but my flash to the camera quit working so I took it apart again to see what was loose and when I put it together again No LCD! aargh! This no display problem is driving me nuts!!! spent hours on it.
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