Monte Carlo
Gottlieb, 1987So picked up a Monte Carlo that would reset. Took the piggy back board off and damaged 2 traces. So fixed the 2 traces, added sockets and Great Plains new piggy back board. Also did tnt's ground mod. Now when on for 5 mins it starts resetting. Also when I put it into test mode it stops right at lamp 2 test and gets stuck. So now I'm stuck. Some times when I press on the new piggy back board it resets and sometimes it doesn't. I am also looking for a manual
Seems like if it's resetting as you press on the new piggyback board some there's still a problematic connection on the MPU.. maybe another pad that lifted or affected trace? A logic probe can sometimes help you find that.. or just beeping things out with the MPU pulled from the machine.
Another idea if you're fooling with Gottlieb System 80B's a lot is to pick up this board off Oshpark (that I shared a while back) and burn an eprom for it if you have the capability. Helps make diagnosing MPU issues a bit easier, especially with Marco's eprom (MarAlb on Pinside). http://www.pinitech.com/lab/gottlieb_sys80_univ_tester.php Link to Oshpark boards if you don't mind doing some soldering and sourcing the components yourself.
Another option I was working on that may prevent ripped traces in the first place but would also be a great diagnostic tool for the problem you're having: http://www.pinitech.com/lab/gottlieb_sys80_piggydeux.php Where it'd be useful is if you just wanted to pull the eprom from the on-board piggyback and put it in this alternate board.. you could verify for sure that the resets are only happening when the eprom is in the on-board piggyback. Unfortunately that one's not available yet, but if it interests you enough then jump on the waitlist for it.
Trying to help make Gottlieb System 80B problems slightly less annoying 
Quoted from Bax1:I was reading up on the piggy deluxe. Would be cool if that fella makes it
Oh I agree! Should definitely get his butt in gear!
Quoted from Bax1:So what kind of EPROMs does the tester board need? If there is a pad that may have been damaged, how does the tester pick that up?
2764 eprom.. you can use the eprom from the on-board piggyback. Pop that out, put it in the PIGGYDEUX (which goes in the TC1 socket). I suppose if a pad has been damaged at the eprom socket that is critical to keep the address/data/select signal to the TC1 socket then it could be a problem. I'm not sure how many (if any) of those kind of connections are happening at the MPU's eprom socket though. But otherwise circuitry is just duplicated at the TC1 socket so as long as signals are getting over there you'd be in business.
Interesting.
If the board were in my shop, I'd put the GPE QuickScan80 on it.
My suspicion is that you either have a failed RIOT (since it resets during lamp test) or you have a damaged trace that went undetected during repair.
And in a Doh! moment Ace, I didn't know that the piggydeux would replace the daughter card on an 80B. Nice!
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Ok so dumb rookie here. So yesterday when it was resetting, I try pushing on the board. It would reset. So today after leaving it on for a few mins, I pushed on the board. No reset. Had coin door open and noticed the slam switch was flailing and causing resets. Adjusted that and so far so good. Still can't get past lamp 2 in test mode. 
Quoted from Bax1:Not resetting in lamp test but just can't get past lamp 2. Can't advance past it and doesn't advance on its own
I've seen that before but don't recall how I fixed it. My guess would be the 5101.
--
Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Does anyone know what makes the left drop ramp go down during play? I've been playing mine for 2 months and cant figure out the secret.
Thanks,
Quoted from GVONM:Does anyone know what makes the left drop ramp go down during play? I've been playing mine for 2 months and cant figure out the secret.
Thanks,
I think when you roll under it and lock a ball in the upper ball lock then the ramp should drop.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/gottlieb-monte-carlo-resetting-and-need-manual-pdf and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Westland, MI
