(Topic ID: 218863)

Blackout (Wms system 6) keeps blowing 2.5A SB fuse F2...


By pb456

1 year ago



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  • 33 posts
  • 7 Pinsiders participating
  • Latest reply 1 year ago by pb456
  • Topic is favorited by 3 Pinsiders

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#3 1 year ago

There's only two relays in blackout, the flipper relay on the driver board and the GI relay to black out the PF. Do you mean the coils? Transistors?

Ball kickout locking on would cause fuse to blow. Probably the transistor on the driver board for that coil is bad.

38V is fine.

#7 1 year ago
Quoted from pb456:

I disconnected the ground from the Eject Hole coil.

Which wire was that?

So fuse is still blowing but no coils are locking on?

#9 1 year ago

#3 from the top is 2J11, it controls solenoids 1-8, including the eject hole, outhole, and both drop targets (see manual for full list). So one of those coils, or the transistors driving them, is bad. Try disconnecting the wire from the other coils as well and see if one of them stops it blowing.

#13 1 year ago

It's probably not the rectifier since it was only happening when 2j11 was plugged in. Could be that this time the rectifier drew enough current to blow the other fuse faster that the 2.5 could.

Easy enough to test the rectifier though, just take off the four wires and check it without dmm.

Alternately, if you disconnect the output wires of the rectifier and the 8a doesn't blow, then it's not the rectifier.

#23 1 year ago
Quoted from pb456:

saw the MPU board boot (top led solid red)

That shouldn't be how it looks when booted...

Quoted from pb456:

The switches would still score points, if I hit them with the ball, but generally things went south.

You mean the lower switches on the stacks under the PF?

#25 1 year ago
Quoted from pb456:

anyone know of a wiring schematic?

Meaning..... What wires - color and position - go to what spot on the harnesses and what are they connected to?

I don't think there really is a listing like that for newer machines, but if you look in the schematics for older ones like Hot Tip, they have a full listing of connectors and colors, and I think they're fairly similar. If something doesn't match up you can try to confirm by tracking it down in the schematics itself

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