Untested Bally Squawk and Talk

[DRD]

I have one in reserve that came as part of a job lot of circuit boards.

It is untested but looks complete, unhacked and in good general order.

It has no sound roms in it - which can't be a good sign. Presumably this board failed and the Roms were taken for use in a working board ? - But I might get lucky

How am I best to test it pls ?

Does anyone supply Fathom Sound Roms - so I could at least try it in my game as a first step ? I don't want to swap Roms out of my known working board in case I damage something.

Thank you

 

[stevebm1]

you can test the board on the bench,by getting the led to flash and if the sequence completes,you can push the test button to hear sounds,
wire it up:

TP1 - GROUND
TP4 - -5V DC
PIN 10 OF HEADER CONNECTOR +12V DC

And connect a speaker to the usual pins,I usually use a jamma power supply to test mine