Have been slowly working my way through a very dated and unkempt #BSD for the last few months in my spare time. After hours of troubleshooting old boards with minor corrosion I decided it was time to replace all the questionable boards.
The sound board was one of the boards not replaced in the head, including the DMD board affixed to the back of the display itself. CPU, Driver board, FLIP, DMD controller boards all replaced, still, strange noise emmits from speakers and the pin fails to boot/display anything. Lights in their glory except D20 on the CPU board.
This pin was stored in a non climate, non animal controlled building, but is suprisingly in good shape. I just worry there may be a critical failure somewhere which I may be over looking, as it sat for some time (a decade or more.) Can't assume it'd be the transformer not supplying the proper output due to their resilience, so Im kind of lost!
Any thoughts, ideas and/or knowledge would be highly appreciated!
I have a video of the noises, but it is just some humming and crackling through the speakers, nothing exciting.