3100 , no light and no ring ????:/
 

hi
got 2 3100 here .
first having ring problem , buzzer is o.k , but phone wont ring . i have tried cleaning the pads but still nothing . any help ?
second phone got no light in lcd and no light in keypad.
i have replaced the led driver , resoldered and clean all.
still same prob , when i got the phone , th big cap near the driver was riped from the board , i have replaced that one as well , i wonder what else to check.
thx
( also checked lcd conector , and cleaned and resoldered)

do you make full flash at the latest version?
and are you sure for any water damage?
check this track/on pic/...if broken then you must to resolder UEM.......you can tru to hold down uem and measure this.........
:D post result

hi
yes , link is not broken between those points .
and yes , i have flashed the phone with latest version ...
btw , i dont think phone had any water damage , thought when i got it 1 resistor near the buzzer pad was riped from its place , i have replaced it .
i will post a pic later today
any ideas what to do ?

up.....good work.......*** bless

its UPP problem.reball the UPP...

yes its UPP problem.reball the UPP..............