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Fantastic project and well done to all concerned .haven't a clue what all the techy babble is about but the end result and idea is brilliant 👏

At long last I have spent some time giving this classic some tlc! Had it a few years and picked it up at a local auction house, it worked when I picked it up but needed a good clean and service. This is happening now, I have the reel deck stripped and the clutches soaking in neatsfoot oil as per Ron's guide. I guess I will need to look at the control deck, I'm getting some squeking whilst in credit from one of the modules, looks to be the one at the very back? Also the earthing looks suspect? I see an earth wire has been extended and was hanging loose? Looks like it might have earthed the control deck? Maybe you could advise me Ron, should be clear in the pics. Cheers Ronnie

Excellent news, and thanks for sharing the information! I have a friend who has a Cash Counter machine missing the CHR so if this could be done so that the machine actually runs then he'd be over the moon.

Great machine ronnie .

Check the 5v rail. That supplies the reset circuit. Needs to be between 4.8v and max 5.2v. It should come out of reset without video card plugged in. I don't think this is official Bell Fruit even though it's in a Bell Fruit cab. I don't remember seeing these.

Hi, have a look at the wiring loom plugs that go into the power supply. Are any looking black or melted? If so clean up the metal contact surfaces in the plug. Sometimes what happens is you get some resistance through the contact (why they get hot) and the can voltages drop. The green led lights up but the machine won't work if the power is lower. Hope that helps

Thanks to everyone involved All i read is good news in this thread

That's a shame as it looked like a nice example before damp got in the wood! Same cab as my pool play

Cheers Nick that would be amazing

What it does is patches to stop the protection part of the Chr check running, also stops the Rom checksum being ran, and then reroutes lamp code that would talk to the Chr chip to my (portable) routine, that based on the challenge in the register, puts the correct responce for the lamp column ref'd by the challenge in the register, then returns. Pad a few NOPs over the remaining Chr lamp code and Bob's your uncle

Still a fair bit of work to do on all this, but here's a demo of doing a patch. MFME won't be needed (for real machine users who don't use emulators), as that dropdown list will grow as I build something to scrape in the 8x 'magic' numbers per game (used for the lamp mapping). So they select their MPU4 ROM file, select the name of the game from the list, then click 'Patch' button. I use MFME here to show what's going on with the Rom it is using, and then to show the patched ROM working with a completely zero'd Chr chip (same as when machine has no chip installed) at the end

Doh I should of listened lol

Cheers fella. This is actually a later rebuild of Joker’s Wild from around 1998 (?), housed in the nice looking ‘Vegas’ cabinet, slight differences to the original version in that it could offer ‘flash’ wins when offering a nudge. J