/diy/ - Do It Yourself

>>1279508
Probably a 1N942 12V zener diode, but it might have a letter after the 2 like an A or B. If you can desolder it and read off all characters on it that would help. If that broke while the thing was running, which is likely, then you might well have some other broken components on the board, namely the ICs (maybe relays?) since the lack of the zener will push the supply voltage up at least a couple of volts.

On the assumption that the zener is being used as a voltage regulator for the power supply, you might want to consider bodging a 3-terminal linear voltage regulator in there instead, but it would require a bit of reverse engineering and probably isn't necessary.

Also that's a nice capacitor there.