1200 black screen on powerup help!

[Descent]

Hi,

I have an Amiga 1200 motherboard rev 1B ROM 3.0 39.106 as soon as power is turned on I am greeted with a black screen. The drive still clicks and workbench disk will boot in but always a black screen.  Tried all video outputs RGB Comp RF and 3 TV/monitors and tried different PSUs including an A500 PSU. Also re-seated ROMs. There is no accelerators or memory expansions attached, it is just a stand alone 1200.

So I am guessing it is an internal video fault.

If there is anyway to resolve this please help.

Thanks.

[Descent]

It was just a board that I bid for. Unfortunately only the ROMs have sockets. I had thought of trying an A520 but I wasn’t getting any RGB output. But I will try anyway.

I also tried the two mouse buttons at boot still nothing. Not even a screen flicker on reset. But the computer still works just can’t see anything. I do have another 1200 which works fine. So I think the boards video output is dead!!! Never mind.

Anyway, Thanks for the help.

Descent.

[Descent]

I shall try to have a fiddle around with the board a bit more but I think it is a bit of a loss.

Thanks for the advice