50v Fuse

By ClintP

5 days ago


  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 4 days ago by ClintP
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#1 5 days ago

Does the 50v fuse ever randomly blow or does it always point at an issue? I had it blow today while testing functionality on the machine. I have run many balls through the machine without blowing the fuse and after replacing it ran quite a few more through trying to reproduce the problem. It blew on an extra ball just when the ball went through the gate switch.

#2 5 days ago

fuse (resized).jpg

#3 5 days ago

the filament breaking from vibration or jolting happens - usually at a cap where you can't see an issue.

if the filament vaporized, you have a problem.

the ball gate switch is NC and causes the lifter start relay to lose power when it opens.

the lifter start relay is on manual page … not. Typically, the LSR has three switches:
1] hold in switch to keep itself powered until the ball gate switch opens
2] switch in selector lock trip relay circuits
3] switch in ball lift motor circuit

if another ball wasn't enabled to raise, the most likely place to look is the [2] circuit. If the problem only happens when select before 5th is enabled, that's another clue and you'd want to check the plug connections for wires 98-4 and 23-8, trough switch #3 and the loose wires around the trough that go to meters that likely aren't in the game.

#4 4 days ago

I couldn't see the break in the fuse as it looked good visually but was open with a meter. I'll continue to watch for a repeat of the problem but hope it was just vibration and a coincidence that it seemed to happen when it went through the gate. I appreciate the help.

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