820-3476 No picture on screen or external monitor (not always) - backlight ok.

[phuketmymac]

Hi again,

I have that other mainboard which most of the times doesn't show any picture on the screen or external screen.
For some reasons it will work once in a while.

Backlight is working fine.

We have CPU_VCORE when no pictures.

Again, no apparent liquid damage on that board.

Any ideas where to look? I was thinking reflashing the Bios...

 

[dukefawks]

At least try a known good LCD assembly first, check SMC_LID. Do NOT touch BIOS!