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Help! Game Board Repair (Super Pang)
Mike A:
The first step is to buy a lamp. You shouldn't be doing this kind of work with bad lighting. Besides wrecking PCBs you wreck your eyes.
CHRIS-F:
--- Quote from: Mike A on June 30, 2019, 11:29:44 am ---The first step is to buy a lamp. You shouldn't be doing this kind of work with bad lighting. Besides wrecking PCBs you wreck your eyes.
--- End quote ---
Yeh lesson learned, wont be doing that again, sad thing is I have a nice CCFL lamp with adjustable stand for this very reason, and I normally have my reading glasses on, it was a just a stupid moment, I wasn't even working on the machine I was just walking past it and thought "I know check the psu voltage the 12v might be too high/low" I quickly powered it up didn't have my glasses on and no lamp plugged in my meter was already there :-(
Mike A:
I think everyone has done something like that. You are in good company. :cheers:
CHRIS-F:
I seem to be running into more and more problems with this board, In MAME it says Super Pang world bootleg uses two Z80 CPU's at 8Mhz, I think I have seen more than one type of S-Pang bootleg so that may explain it, but when my board was working and I checked pin 6 the clock pin on both my CPU's this is what I got;
Z80 CPU near the Sound section (ZILOG Z0840006PSC - 6.17Mhz ) running at around 3.75Mhz (ok as its underclocked)
Z80 CPU (Main one I think) (MOSTEK MK388ON-4) running around 6Mhz
I didn't give that another thought until I killed two CPU's one after another with that lifted trace, now I've come to find a few spare CPU's and I thought I'd either try and find a couple of 8Mhz CPU's or just replace them with the same type if I could find them but that one I believe to be the main CPU at the bottom of the board seems to only be a 4Mhz Mostek, although the game seemed to work fine, am I going crazy, surely it couldn't have been running overclocked by 200Mhz?
So with that in mind what type of CPU should I source for spares/replacements? will it matter if they are NMOS/CMOS etc and anyone know of a reputable source in the uk?
Thanks again.
Titchgamer:
Dude, At this point in time I think you are better off just getting a new board.
Dont get me wrong if your having fun and learning crack on but if you want to actually play the game for what its going to cost you in time and money its scrap.
After all its only about £30 to get a replacement.