I have been bringing a Sorcerer back to life and gotten hung up.
When I started working on the game it was in pieces - literally scattered across several boxes and plastic tubs. It is now fully assembled again and I thought I was on the home stretch as I only had one pop bumper (L) and one sling (L) not working. Those switches NEVER register as closed, but that's another issue for another thread.
To give you some perspective, all caps were replaced on the power board, as were the fuse clips and fuses. NVRAM installed and no sign of battery damage. 95% of the connectors were repinned, I left a couple of IDCs as they were fully pass through and I hate squeezing 2 wires into a single connector. The MPU has always booted up error free with "0" on the LED cube. I did have to replace the High Score reset button on the coin door as it had no diode and a broken lug. The Advance button on the coin door periodically gets stuck, but works. I did add an illuminated start button complete with diode and had no issues since install.
The game had been correctly booting up and "playing" for over a week. Game is set to free play (Setting 23 is "00"). Switch test shows all switches open with balls absent. Trough switches show closed when balls present. All diodes in that area test good and are correctly oriented. I have also tried manually adding credits via the coin door switches and while I get the audio "credit tone" they never increment up.
Here's the weird thing...every once in a while the game "forgets" it is in free play. I will cycle through adjustments and see that it has flipped back to the default. "01". What would cause this reset in settings?
Ultimately, I took a huge step backwards as I can no longer even add a credit or start a game and have probably been staring at it too long now to be thinking clearly.
Thanks in advance for any insight!