(Topic ID: 152298)

High Speed Help

By Jared1862

8 years ago


Topic Heartbeat

Topic Stats

  • 81 posts
  • 12 Pinsiders participating
  • Latest reply 7 years ago by GRUMPY
  • Topic is favorited by 1 Pinsider

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#15 8 years ago
Quoted from Jared1862:

That fuse was bad, so now the hideaways fire!
However, I still have a mess. I bought this at an auction pretty cheap, now I know why...
The previous owner replaced both flipper coils, two pop bumpers coils (neither look to be the correct coil). Also he added diodes in an unusual way, or at least to me.
When I run the coil test now the below do not fire: (Which is now two less then before)
Left Kicker 17
Right Kicker 18
R. Jet Bumper 19
LL Jet Bumper 20
UL Jet Bumper 21
Top Flasher 22
Lastly, there is some damage on the board where the transistors are on J19. So I will most likely send the board in for repair.
I think my problem is due to some bad transistors and possible board damage. However I am not sure what caused it...
Also, I still have no idea why the flippers aren't working, unless it has something to do with J19, where all the damage is done.

All those solenoids are part of the special solenoid group. Do those work outside of test mode? I don't have my HS any more, so I don't recall if those are suppose to fire in solenoid test.

#18 8 years ago

There is fuse for the flippers on a separate board if I recall. You should check that if you haven't already.

The special solenoids (the 6 you list) may also be on a common fuse, I forget. Q77 looks burnt, it could be shorted causing a fuse to blow for all the special solenoids. You could pull the wire from J19, slot 8, to take Q77 out of the circuit (with power off), make sure the fuses are all good, and then try it.

#20 8 years ago
Quoted from Jared1862:

Yes, I agree. I am going to replace all of the diodes and lose the telephone wire.

There is a separate board, and the fuse is good. You are correct, there is a fuse for the special solenoids, and that is good as well. I do think it is odd that none of the fuses blow.

Strange indeed. Are you removing the fuses and checking them with a meter?

The special soleniods are controlled by U45 and U50, which both appear to be socketed on your board. It's unlikely both those chips would fail together I think. You could try replacing those chips, but that's a long shot

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