Hi have been searching for an answer to my problem all over the NET. I hope it is ok if I ask it here.
I've been helping a friend with his Jurassic Park pinball. It all
started with the F1 fuse constantly blowing on the power supply
board.
1st: I replaced both BridgeRectifiers BR1 and BR2
2nd: The Power Supply contained all fast blow fuses so I replaced them
with Slow Blow Fuses.
Then the sound board completely fried. (I think it was because of the
slow blow fueses. High power getting to sound board for a longer
period of time)
3rd: I replaced the Power supply board with a Rottendog board DPS004.
I decided to measure the power on the board and that is when I
discovered the +12V is actually 24.8V. All other voltages are fine. I
don't think the power supply board is the problem since this one is
new.
What do I look at next?
I realize this question is specific but I am looking for other general places to look for the problem. I don't believe it's any of the PCB boards.
Should I replace the transformer?
I would really appreciate any ideas/help/info you can give,
Aaron
I've been helping a friend with his Jurassic Park pinball. It all
started with the F1 fuse constantly blowing on the power supply
board.
1st: I replaced both BridgeRectifiers BR1 and BR2
2nd: The Power Supply contained all fast blow fuses so I replaced them
with Slow Blow Fuses.
Then the sound board completely fried. (I think it was because of the
slow blow fueses. High power getting to sound board for a longer
period of time)
3rd: I replaced the Power supply board with a Rottendog board DPS004.
I decided to measure the power on the board and that is when I
discovered the +12V is actually 24.8V. All other voltages are fine. I
don't think the power supply board is the problem since this one is
new.
What do I look at next?
I realize this question is specific but I am looking for other general places to look for the problem. I don't believe it's any of the PCB boards.
Should I replace the transformer?
I would really appreciate any ideas/help/info you can give,
Aaron