BO/AC schematic available

[Zymurgy]

After some searching I have discovered flippers.com has a schematic available for the BO/AC circuit board. It is not listed on their website but they were extremely helpful through emails. It is not available in any service manual.

I also found out many nonfunctioning BO/AC boards just have a single regulator that is bad. This is caused by the card which determines the cost of each play, is removed when the jukebox is powered up.

There is one regulator mounted to a heatsink which is the one which goes bad. It is 7805 5 volt regulator, I am hoping it is the only thing bad with mine.

[Ron Rich]

Mike,

Which, BO/AC ?? I have one somewhere around here for the 555---Never saw one for the LSI type--and that won't do any good anyway, as the LSI is NLA !

Ron Rich

[Zymurgy]

It is for the 555.

[Zymurgy]

Just an update, the single regulator replacement did the trick. For the first time it has accepted coins. Funny usually I have a pocket full but only quarters tested. It has a unique program card for the older wallboxes it ran with, 1 selection for a dime 3 for a quarter. It will take a 50 cent piece, going to see if I can locate one.

I am thinking any time this jukebox is moved the program card should be removed. There is nothing that keeps it clamped in place so if it comes partially dislodged it would fry the regulator when power back up too.