After months of not being able to work on the electrical problems with the Spot Bowler estate sale find I picked up last October. Finally started a couple of weeks ago.
When first turned on, start button didn't work, tripped start relay from inside cabinet and score motor ran continuously and 10,000 point relay stuck on and buzzed loudly. Went through every switch / contact on the play field to clean and adjust, 3 times. Finally on the third time ----- it works. Before and after pics attached and link to You Tube video:
Not that it is perfect of course. It doesn't seem to be counting balls correctly and doesn't know when the 5th ball has finished to end a game. Occasionally score motor won't stop spinning until one of the rollovers is engaged by the ball. It is not set up for free play, so I will have to research that. Not sure it is scoring correctly and have light hum from a couple of coils at times. And while when I am not taking a video the left flipper works - the contacts are completely gone from the switch.
But, after probably 20 years or more of not working, it's alive.
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