Hello everyone.

This is my first attempt at replacing anything in my machines. So far it's just been cleaning contacts, cleaning steppers, and adjusting switches. I have the schematics, but I'm still trying to figure out how to read them.

I had to change my first relay in my Gottlieb Sweethearts today. The machine would light up, but wouldn't drop a ball and start the game. I noticed a fuse kept blowing and realized my hold relay was shot.

I was unable to find any R20-4 #29 relays online so I swapped it with an A-9735. The A-9735 mounts backwards so I had to solder the wires to the opposite posts due to length. I assumed soldering the cables to either posts would be fine as long as it makes a circuit. Now I'm getting no power when I plug in the machine.

So, is it the different relay giving me trouble, the cables I soldered, or something totally new and different? I'm attaching pics. Any advice is appreciated.

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Thanks the info. Is it okay that I switched which terminal the cables are soldered to? The red and white was too short to reach the far end.