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gjasmith

Member Since 20 Aug 2015
Offline Last Active Feb 02 2021 09:54 AM
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Topics I've Started

MPU4 battery damage.

04 October 2015 - 05:35 PM

Hello,

 

You would not believe how much help I've had from these forums without even posting! :-)

 

The back story is that I bid on an old Crazy Capers on ebay on a whim and won it for £2.

 

Having collected it, it had obviously been very damp, PSU, MPU4, reel optos, lamp board and even the cabinet were all damaged.

 

I already had a MPU4 Red Hot Fever and 2 spare (MOD2) MPUs so that helped a bit.

 

PSU is now working, reel optos replaced, lamp faults fixed and even the cabinet has had an overhaul!

 

I now have the entire guts of the machine laid out and working from one of my old MOD2 boards but there is no sound. There are 2 speakers, one next to the coin mech and one at the payout, neither give any sound, do I need to use an MOD4 board beore I get sound or should the program card still output sound?

 

I've been using "MPU Faults V0.3" (which I think was from Booze) to repair the original MOD4 board but some of the battery track fault information near the bottom seems to contain errors, I'm pretty sure this is all thats wrong, the two connections from IC3 to R111/R112 were both broken and have been fixed, IC8 pin 19 to R113 is good but it mentions another IC8 pin (no number) which goes to D1 and IC3 pin 2 which should also go to R111!?

 

So the question, being that this file appears to contain errors, does anyone have a list of points which should be checked and jumpered for the tracks around the battery?

 

I know I can trace them all back but a list of test points would be handy! :-)

 

Thanks.

 

Gordon.