(Topic ID: 82468)

Corvette problems


By dezaanster

5 years ago



Topic Stats

  • 6 posts
  • 5 Pinsiders participating
  • Latest reply 5 years ago by LTG
  • Topic is favorited by 2 Pinsiders

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#1 5 years ago

Hi guys!

I have a Corvette pinball machine for about a year now. When I first got it, it had some issues that I've been able to fix but the machine still has a couple of issues I'd like to resolve.

The first problem is that when you flip the flippers continuously for a few seconds, the fuses for the flippers on the fliptronics board blow. Sometimes only 1, sometimes 2 and sometimes all 3. Also, when 1 fuse has blown and you flip the remaining working flippers, the other fuses will eventually blow as well. I already replaced the flipper coils with new ones, but the problem persists.

The other problem is that after playing for some time, the fuse for the racetrack and engine occasionally blows. The problem used to be worse, since I replaced the coils in the engine it's happened a lot less, but I still would like to have it fixed completely.

Where to start troubleshooting these problems?

Bart

#2 5 years ago

I suppose you use slow blow fusses for the coils ! If yes check if not the setting of primary trafo is set to 210 vac instead 230 vac

#3 5 years ago

I had bad transistors in my flipper control board that was the root cause of fuse blowing. If you replaced the flipper coils (and wired them correctly) make sure you have the correct voltage at the coils. Make sure your end switch is working properly, then if it still blows you need to trouble shoot the control board.

1 week later
#4 5 years ago

The voltage at the coils was correct, so I decided to take a look at the fliptronics board. I noticed that one of the transistors had clearly been replaced in the past since it looked different from the others (see attached photo).
Because I have no experience with soldering on PCBs, I searched for a replacement board. I found one and after replacing it today, the issue with the flippers is solved!

One more question I have is about the slow blow fuses. On the new board I got are fuses that are a bit different from the ones I normally use. The ones I have, have a really thin metal wire running through it, but the ones on the new board have a thicker wire with another metal wire around it (see pictures). Is there a difference between them?

02100-sicherungsset-gr.jpg detail.jpg WP_20140309_019.jpg
#5 5 years ago

You need to check all 3 flipper end of stroke switches on the flipper assemblies and make sure they are making contact and that there is not a broken wire on any of them.

#6 5 years ago

You can't go by the wire inside. What does the cap of the fuse say ?

LTG : )™

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