(Topic ID: 268807)

Hardtop Install and Restoration for Eight Ball Deluxe

By Mathazar

3 years ago


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Topic Stats

  • 134 posts
  • 21 Pinsiders participating
  • Latest reply 2 years ago by Lovef2k
  • Topic is favorited by 27 Pinsiders

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#66 3 years ago
Quoted from Mathazar:

The problems are neither sling fires on switch contact and none of the pop bumpers fire on switch contact.

The pop bumpers and slinshot switches are on the strobe #4 signal wire in the switch matrix (MPU connector J2 pin 5, yellow-red wire), so that might be a place to start.

#71 3 years ago
Quoted from Mathazar:

quench - I've turned my attention to the Bank Shot red standup target ("Inline Back Target", brown wire in the schematic). It won't register a hit.

With the game started, the target registers/scores if I bypass the diode with a jumper wire.

Bad (open) diode? I haven't pulled it out to test yet. I need to order some diodes anyway.

Yes, if bypassing the switch diode makes the switch work then the diode is very likely open circuit. Test it with your multi-meter in diode mode.
You can borrow a diode from one of the slam switches for the short term till replacements come in.

2 weeks later
#95 3 years ago

Oops

EBD_PlayfieldBoardLamps1.jpgEBD_PlayfieldBoardLamps1.jpg

#98 3 years ago
Quoted from Mathazar:

here's the photo I should've posted.

Much better - I was going to say something about that black-wire being pulled tight but looks like you dealt with it
BTW, carefully inspect the soldering on the pin headers on that lamp board. I can't see any issues but the solder joints can fracture/crack from vibration.

2 months later
#114 3 years ago
Quoted from slochar:

the hump area in it is if a ball gets stuck behind the 8 ball so it can come out.

Agree with @slochar, that cavity in the left plastic is supposed to be there for this reason.

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