Quoted from Its_me_aj:
I started working on Magic Castle again and have numerous problems. I was doing some reading a found out that my IC4 chip had a 2114 in it as well as a little corrosion on the chip holder. I looked into replaced for the correct chip and found that Pinitech makes a NVRAM for the gen2, bought one and put it in as well as replaced the holder. They game held memory for a few but went back to defaults. Also all coils will engergize and blow F5 fuse. This doesn't happen every time I turn it on though. If I disconnect a ribbon cable form the CPU it will boot just fine. But if all of them are connected it is more likely that there will be an error and blow F5.
Also when I go into audits and I switch dipswitch 4 on, I do not get the binging noise. There is also no noise when I add credits. The other thing I found is that if there is credits on the game and I turn it off, the credits reset. And finally, when I go into display tests all but one display cycle through the numbers. One of them stays at 00000000. Could this be why when a game is started, there is no blinking display to indicate what player is up?
IC4 is normally a 6514 but even 2114 is ok in terms of game functioning, but with a 2114 you would kill the battery therefore should not use 2114 in IC4. IC5 is a 2114 and works strictly together with IC4.
I have never seen a Pinitech nvram in real but I assume it works ok like all nvram for 6514 replacement.
Regarding your problems it look to me as you could have a problem in the output memory area, most probably the main output memory which is a 2101(IC23) or some components around it.
Cannot really help more from here.
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