I have a United shuffle bowler and have become familiar with most operations. My friend has an older model (1951) that has begun blowing the main fuse. It has not done this the previous 10 years that he's owned it. This only happens when the machine is turned on and then not played for 1-2 hours. After that amount of time sitting idle the fuse blows. If the machine is turned on and played right away the fuse does not blow.
I will be going to my friend's house this weekend and attempt to trouble shoot the problem. Can anyone give advice as to where I should start looking?
Thank you

Thank you....I'll check that first.

HowardR thanks much for the link. I had considered getting a mini breaker but could not find one locally.

Mopar,
All i know right now is that he said the machine shuts down completely when the fuse blows. He was not sure if the amperage was 1A or 10A. He lives 150 miles away. I'll get there Saturday and take a look.

Mark,
Thanks for the warning.

Thanks again Mopar. I do know that his machine has the smaller pins. He mentioned that replacement pins that size are impossible to find.