820-3115b no image on screen

[Robbie Hamilton]

Hi guys and gals..... I am new to the repair game but a fast learner.
I have a 3115 board that boots perfectly on an external monitor but not on its own screen. The screen energizes but just doesnt show the image.
I replaced the backlight driver and the lvds connector looks good.
Any ideas on what could be the problem?

 

[Robbie Hamilton]

It seems that L9080 pins 1 and 2 were shorted to ground. I removed the lvds connector and the short is now gone. I will replace the connector tomorrow and let you know what I find out.

 

[2informaticos]

First of all, welcome to the forum.

You should check for short w/ and w/o LCD connected first.
Be sure the short is not inside LCD assembly.

For the future, do NOT touch backlight circuitry, if no image present...

 

[Robbie Hamilton]

I changed the lvds connector and the short went away. The computer works perfect now. Thanks for your help.