820-00840 No video

[prodigy83]

Board has been liquid damaged, and it is powering up all the way to S0. I did have video on it about 1 month ago, it sat, now after having hooked it up, it has no video now. When I hook it up to an external monitor, the monitor does detect a signal but never shows any video.
D3452 was knocked off the board with traces ripped. I have stuck down new solder slugs and taken a diode from a donor board. When measuring D3452 on pin 2 I get pulsing 1.9-.800. But on pin 1 I get nothing.
What should I be doing or looking for?

 

[2informaticos]

Please use schematic refferences, instead of boardview.
If board turns on and get USB activity, D3452 shouldn't cause the actual problem.

Did you test external video on both ports?

Caps Lock light reacts correctly?
Try to confirm USB activity.

 

[prodigy83]

Did you test external video on both ports?

Yes, both ports have no video however it does turn my monitor light from amber to white, so it is indeed getting some sort of signal.

Caps Lock light reacts correctly?
Try to confirm USB activity.

No, caps lock light is not coming on, but I do have USB activity (mouse lights up).

 

[2informaticos]

"I do have USB activity (mouse lights up)"
That is not activity sign.
Use pendrive with Link LED, or a dedicated USB tester:

Chipmunk USB Tester

www.cmizapper.com

If Caps Lock of internal KB doesn't react, board is probably stuck.
You should try known good BIOS.