The Devil Riders sound board does have a Test button.
Zaccaria pinball machines sounds how to#
Problem is I don't know how to test it to make sure.
Zaccaria pinball machines sounds generator#
I quoted this because I'm guessing that the sound generator GI AY-3-8910 may be the problem since I don't have any of the electronic sounds and all the speech clips. So I moved onto the Sound board, the Zacarria site says that "Electronic sound effects are generated via a GI AY-3-8910 and/or a 1408 DAC, and sampled speech clips are recorded in ROMs on the board played via a TMS5220 speech chip" Pins 1-2 should have 165VAC and it test at 181VAC on my machine) Also I tested all the Test Points and they all test good with the same characteristics of having a few volts higher than stated on the Zac site. They are a little higher than what is stated on the Zaccaria site ( e.g. I have all the proper voltages coming off the transformer at connector 1. I did recheck the PS board just to make sure it tested OK. Like I said it has been awhile since I did that repair and it worked fine for over a year that I know of. Yes I did, I believe the BR's came from or. Both numbers should be met or exceeded according to design specs. Thanks for any help and tips on how to repair this myself, Billĭid you match the voltage and current on the bridge? I think my PM used a 35 amp 400v bridge. I attached a pic of the back of the board for what it's worth, but I don't know it might not even be the problem.? I guess if no one has any ideas I'll start there and replace all three, the older two and the newer one I did last time. I did use the heat sink compound on all three BR's when I replaced the sink too.Īnyone have any hints on where to start? I guess I should have replaced all three of the BR's when I had it off the 1st time. I took it off and all four of my solder joints look fine from the bottom of the board. I powered it up again and noticed that the sound board LED powers on when I turn the machine on but I only get a little tick or a pop from the speakers and then it shuts off.Īlso the heat sink that I had replaced the BR on years back was really warm? Still I'm not 100% positive that this is the source of the smoldering smell.
I shut it down and looked in the back box and nothing looked charred with just a quick look over.
When I came back into the room I noticed that awful smell of electrical burning or at least getting hot. Well, I flipped it on tonight and quickly noticed I didn't have any sound? Still I played a game and left the room for maybe 5 minutes. I replaced it and have enjoyed many games since that, but haven't played it in over 6 months now. I managed to find a Devil's Riders at a garage sale about two years ago that had a bad bridge rectifier on the power supply board.