debaser138
Well-known member
Question about -12v on Williams linear power supplies
I fixed up a Joust this weekend and I had a bridge at BR1 that had 1 diode shorted in it which was causing the 7amp fuse at F4 for the -12v to blow. The thing is, the game worked perfectly fine with no -12v. I looked at the schems and the -12v goes to the sound board.
Can anyone tell me exactly what the -12v is used for? I did replace the bridge but I'm curious to know exactly what the -12v is for. Thanks.
I fixed up a Joust this weekend and I had a bridge at BR1 that had 1 diode shorted in it which was causing the 7amp fuse at F4 for the -12v to blow. The thing is, the game worked perfectly fine with no -12v. I looked at the schems and the -12v goes to the sound board.
Can anyone tell me exactly what the -12v is used for? I did replace the bridge but I'm curious to know exactly what the -12v is for. Thanks.