LG KM 900 Black Display Jumper Solution

LG KM900 display problem

phone during incoming and outgoing calls display went black

analysis:

try to replace it with a new lcd

if it still does not change .. check one lcd component below:

1. check its working voltage at C515 lcd .. C516 and R503

2. Rehot emi filter or replace it at FL500 .. lcd .. FL503 FL501 FL608 and FL609 ...

3.rehot U200

I hope your problem is completed