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Thank you for your help. I redirected a second wire (still +5V) that was used for a two pin connector (for EGA to VGA/HDMI). That helped a bit.

Much appreciated! Hooking a push to "Service" gives me credits so I'm going to use that and a "test" button on the front of the new cab.

I connected to 16 and T and did a switch test. They are logging as "player up" and nothing but connecting the "service credits" worked! You're a legend! Thank you!

I'm currently working on a rebuild of an NFL Blitz 99 cab. I do not have the coin door apparatus and wanted to use arcade push buttons to activate "Coin Count 1" and "Coin Count 2". When wiring up some buttons to test (appropriate jamma slot and grounded) I can get things like "Test", "Service...

Amazing! Thank you for this. I realized I was focusing on the wrong thing entirely. -5V being for audio and lights. I've been familiarizing myself with the wiring guide and checked the old harness which I have. On the old harness all 4 +5 jamma slots have individual 20 guage and go to the Power...

Thank you!

I might do that regardless but I increased my knob a bit more. I re-measured at the board after adjusting up at the power supply. The +5 is hitting 5.01 and the jumbled words are gone. The demo/attract mode appears clear and stable. After said adjustment, the 12V is at 12.48. Is that a...

Yes. For whatever reason, the HDD doesn't "kick in" without an increase in voltage. Or that appears to be the correlation... I'm going to clean the heads and see if that helps.

Ah, interesting. I guess it was a red herring when I was testing the board and it was actually (potentially) the overall voltage was the culprit. I took measurements at the board as you recommended. In order to get the HDD to spin, the voltage has to be adjusted (I think) and was reading 5.45...

Thank you for responding! 1. Yes, thankfully. 4 pins for each. 2. I think that's my next move if I can't get this sorted. They aren't terribly expensive. 3. I do have a brand new one, it was having the same "off" readings for -5V. 4. Good call. The one thing I forgot to do was clean the...

Apologies, this is about to get messy... I have an NFL Blitz 99 Seattle board that I'm "upcycling" (large converted cab was in a space it couldn't be removed from, I stripped what I could in a time crunch with limited tools) into a new cabinet and modern monitor (please don't crucify me). I do...