3350 blank screen !

[Sam_digital]

3350 blank screen !
I have a 3350 blank screen , iv tried other lcd's on it to no avail , cleaned the board up , etc , reworked pcb board (reflowed) , still no screen ,

I havent changed the ccont yet , will try that soon , can anyone help with suggestions on this ?

Sam

[coffee]

U DON'T NEED TO REPLACE CCONT. JUST MEASURE THE RESISTANCE WITH GROUND AS COMPARE ALL LCD CONTACT POINT WITH NORMAL PCB BOARD. I think : 1) maybe CPU 2) maybe disconnect of some circuit

Coffee

[wings]

Originally posted by coffee
U DON'T NEED TO REPLACE CCONT. JUST MEASURE THE RESISTANCE WITH GROUND AS COMPARE ALL LCD CONTACT POINT WITH NORMAL PCB BOARD. I think : 1) maybe CPU 2) maybe disconnect of some circuit

Coffee

[johnny_liang]

if you turn on your 3350 and then you get black screen first and then lcd get blank you only need to upload mcu + ppm