Chesterfield, MO
I'm on the list! 
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
(Topic ID: 83736)
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3 weeks later
Cool!
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
For resolving game play AND for daughter card issues. I have several MPUs in the shop, one completely missing the daughter card.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
2 weeks later
Quoted from acebathound:Nice to see that it works fine with the Swemmer Board. More leds!
Nice, but I don't know what that proved really.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Working in a Big House.
I tested with the daughter card completely removed. Worked fine.
Tested again with daughter card installed. Still worked.
Nice!
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
3 weeks later
I think you've got a winner Wayne. Good idea!
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
1 month later
Quoted from GoldWingsPilot:@Ace - Can the PiggyDeux be used if the Piggyback is removed/not in place? (And you can read between the lines - I just had a massively failed attempt at piggyback removal on my Gold Wings and just bought a PD on eBay!) I see one mention in the thread about it working without PB in place, just want to ensure that is a supported setup and it does not take any dependencies on all traces/pads being present
Thanks!
Adam
Yes, but, the damage to the traces must be repaired. Signals cross through the eyelets to the RIOTs. This must be maintained.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
Quoted from GoldWingsPilot:Chris, so you are saying you don't need to have the piggyback present, but that there are some critical traces that need to be maintained even if the piggyback is absent as they pass through the board and still need continuity?
I only have one bad trace on the main board, that I think I can bluewire around, but will do extensive continuity checks before trying out the piggydeux.
Thanks!
Yes sir. Just as ace mentioned.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact/
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
3 weeks later
Quoted from Geocab:Is there a way to determine if random reset issues are the daughter board?
With 100% certainty? No.
But if you install a Piggy and the resets abate over a long period, then there is very strong circumstantial evidence that the daughter card solder joints were fractured. The percentage of daughter cards with fractured joints is very high I'd say. I always replace the daughter card with the GPE re-engineered card, but the Piggy is a great alternative and a LOT easier.
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
7 months later
Quoted from acebathound:So on earlier 80/80A games you'd need to wire D16 to pin #3 of the RESET BOARD (via the harness) if you're keeping the RESET BOARD connected.
Easy solution...dump the reset board. It's not needed (and I know that you know that Wayne...just letting other folks know). Unless you are a true, true purist...
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Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Quoted from acebathound:what might cause a CPU lock-up on a Sys80 under normal operation -- failing eprom, failing power supply, dip on the 5v line?
Any of those things...plus more that we could identify together.
The reset board is the equivalent of more modern watchdog timer/reset ICs.
Since System 80/A/B games don't use a lamp matrix, and no coils or flashers will be on during attract mode (generally), there isn't really anything catastrophic that can happen as a result of a locked up MPU board. Hence, no real need for a "blanking" circuit either as found in WMS 3-11, WPC, WhiteStar, etc game systems.
BTW..."why not leave it connected"...I usually take coin drop lockout coils out of the circuit too...
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Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info
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