A few years back, I rebuilt a Bally Eight Ball for a friend, and it's been working perfectly.

...until he moved it to another building. Somewhere in the moving and the plugging and unplugging...

All the GI bulbs on the playfield are blown; putting a new bulb in gets a bright flash, and a blown bulb. All the GI in the backbox is fine.

The _reverse_ is true of the switched lights - everything works fine on the playfield, but all the backbox lights are blown, and the sockets deadly to new bulbs.

All the coils work fine, and the game starts and plays normally. I'd troubleshoot this myself, but the machine's 500 miles away; I had time only for a quick look while I was there, and nothing jumped out at me. My friend's not a complete novice, but can't figure it on his own. Anyone have an idea where to start? TIA!

I've passed that J1 thought along.

We'd been thinking about going LED, but wanted to get this fixed first.

Just wanted to wrap this: I finally got to visit the machine (and my friend) in person, and the problem was J1, just as y'all surmised. The extra pin on the rectifier board has been removed.

__Much_ happier now:

https://images.pinside.com/6/55/6554d66bc582dce8ab03764d0c6ffa325cb5f69d/resized/large/6554d66bc582dce8ab03764d0c6ffa325cb5f69d.jpg

Thanks, everyone!

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