(Topic ID: 233812)

Bally Eight Ball Champ stand-up target help ...


By gweempose

6 months ago



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  • 14 posts
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  • Latest reply 68 days ago by PinballGurus
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Capacitor #2 (resized).jpg
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#1 6 months ago

I just picked up an Eight Ball Champ. It is my first 6803 game, so I am not super familiar with the hardware. I noticed that some of my stand-up targets were not registering fast hits. When I lifted the playfield to investigate, I discovered that the target switches had little capacitors connected to them, but it looks like one leg was purposely cut (see photos). I'm guessing the capacitors went bad at some point, so someone cut the leg to make the targets work again. I have a few questions ...

1 - Did these capacitors come installed on the game from the factory, or were they added later?
2 - Would replacing these capacitors with new ones fix my problem?
3 - I need to place an order from Marco. Does anyone have a link to the correct capacitor on their site?

Thanks!

Capacitor #1 (resized).jpgCapacitor #2 (resized).jpg
#2 6 months ago

The caps were likely cut to stop some scoring issue that happened when the cap went bad. Replacement caps would be 0.047 uf. I didn't see them at Marco though, here's a link for them at Great Plains Electronics: https://www.greatplainselectronics.com/proddetail.asp?prod=CCD-0.047uF-100V

I've also attached the switch matrix diagram with arrows pointing to the capacitors for the E-I-G-H-T targets. You'll note certain other switches on the switch matrix use caps too (but not all of them), you may want to replace them all and be done with it...

1262587508.png

#3 6 months ago

I would start there since it’s a cheap and simple fix.

#4 6 months ago

Thanks! I'll grab a bunch of those capacitors from GPE. Based on that diagram, it appears that there are also supposed to be capacitors on the rollover switches. On my game, only one of the three has a capacitor, and like the other switches, one of the legs is cut. I'll replace them all.

#5 6 months ago
Quoted from frunch:

Replacement caps would be 0.047 uf. I didn't see them at Marco though, here's a link for them at Great Plains Electronics: https://www.greatplainselectronics.com/proddetail.asp?prod=CCD-0.047uF-100V

A couple quick questions. The capacitors that are currently in my game are Y5P's, and the ones you linked to are Y5V's. What is the difference? Also, the ones in my game say "12V", but the ones at GPE are 100V. Does this matter?

#6 6 months ago

Not sure what the difference between those Y5P vs Y5V caps, but i don't think it should matter. Perhaps someone else can chime in on that one. Capacitance can be *slightly* higher or lower, but voltage has to be equal or greater than the voltage of the cap it's replacing.

#7 6 months ago
Quoted from gweempose:

The capacitors that are currently in my game are Y5P's, and the ones you linked to are Y5V's. What is the difference?

The digits refer to the operating temperature range of the capacitor and how much its capacitance can vary in that temperature range.
See "Table 1. Types of Ceramic Capacitors" here:
https://www.maximintegrated.com/en/app-notes/index.mvp/id/5527

This is a low spec circuit, don't get too caught up in this particular characteristic in this application. The Great Plains capacitors frunch linked will work fine.

#8 6 months ago
Quoted from Quench:

The digits refer to the operating temperature range of the capacitor and how much its capacitance can vary in that temperature range.
See "Table 1. Types of Ceramic Capacitors" here:
https://www.maximintegrated.com/en/app-notes/index.mvp/id/5527
This is a low spec circuit, don't get too caught up in this particular characteristic in this application. The Great Plains capacitors frunch linked will work fine.

Thanks! I just ordered them.

#9 6 months ago

My EBC has caps on all of the rollovers and on the targets behind the drops. All of mine are intact except for the one I cut from my right rollover when it was repeatedly scoring ghost hits after the machine "warmed up". My rollover seems to work fine without it. I will replace it eventually, but right now I can't find a place that has both the plastic parts I need and a capacitor. I can't get to the min order from GPE.

I find that the targets behind the drops are generally hard to score even though I have the switches adjusted and clean. They test out with a gentile tap of the finger; there is just not much spare room between the bumpers. More of a snooker table than a pool table, I'd say.

#10 6 months ago
Quoted from newbieinKC:

My EBC has caps on all of the rollovers and on the targets behind the drops. All of mine are intact except for the one I cut from my right rollover when it was repeatedly scoring ghost hits after the machine "warmed up". My rollover seems to work fine without it.

My right rollover works fine with a slow moving ball, but it often doesn't register a fast moving ball. I'm hoping adding the capacitor will fix this. The order from GPE should be here is a day or two.

1 week later
#11 5 months ago

It took nearly two weeks, but the capacitors finally arrived today. I put one on every rollover and standup switch, and the game is now working perfectly. Thanks again to everyone for their help!

#12 5 months ago

I will also be replacing the cap on my right rollover this weekend. Upon further gameplay, I estimate my right rollover scores about 2/3 of the hits without the cap while the others score pretty much every time.

#13 5 months ago

Good stuff, man! Congrats on the fix!! Enjoy your EBC

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