Might be too late today. Tomorrow call JJP and ask to talk to Ken. He's run into this before.

LTG : )

Found it :

Make sure power is OFF. Please check all connections inside the silver “chassis.” Especially check all USB connections from Mother Board (MB) to I/O board and cable connections to the hard drive (SSD) mounted on the side of the chassis…You will need to connect a keyboard to the MB….With the keyboard connected, power the game up, Press and hold F2, release it when you see signs the MB is booting up..Not sure exactly what happened, but the BIOS settings were upset……BTW not all games have a RESET switch, in fact most don't.
This usually resolves the problem, if not give us a call .....

If that doesn't do it, please call Frank tomorrow.

LTG : )

Just out of curiosity, are the computers in WoZ overclocked? I've seen that before and it's normally when your CPU voltage isn't high enough to sustain the overclock and it becomes unstable.

1) no they aren't overclocked.

2) the fix for this is simply to press f1 and let it reload the bios settings. Plug in a USB keyboard and you will be good to go.

My WOZ isn't booting. The fan on the motherboard is spinning, and that's about it. I'm getting 'No Signal' on the monitor. I've checked the connectors and the fuses. I've tried jumping pins 6&8 on JFP1 and nothing happened.
When I plug my USB dongle into the back of the motherboard for my keyboard, the little blue light on it doesn't go on, which would seem to suggest it's not getting any power. Same if I plug it into the USB port near the coin door. So maybe power not getting somewhere?
If anyone could help with what to do next that would be great!
PS this happened a couple of months ago, and I replaced the coin battery, and was then able to get the screen as above up and rebooted via my keyboard. It's not the battery now, as it's showing 5V (CR3032).

Try disconnecting the monitor and see if it boots up blind.

LTG : )

Thanks, I did that (unplugged the black and yellow wires from the back of the monitor) and no change, still does not boot.

I wonder if their apparent lack of power to the UBS ports is a clue??

I’m getting help on this from a very kind pinsider (thanks Bud!) but just wondering if this is normal?
There’s a flashing red light on the I/O board at D201 (says CPU next to it). See pic.

12864CA4-1FDC-4630-AAF2-861EF18EEEE5 (resized).jpeg

I got onto Frank and he was very helpful. We zeroed it down to the motherboard, then Wayne my distributor discovered the RAM had failed. Put a new one in and my game’s working again.

This just happened again (not booting, no playfield lights, fan is spinning).
I removed the RAM and seated it in the adjacent slot. This fixed the issue (had to reboot via F1 and a keyboard).
Hopefully this helps if anyone has the same issue - reseat the RAM.