I'm finishing up my Jet Spin and running into hopefully my last issue. On power up, pressing the replay button will start the reset process, and when complete, serves up ball one - The game plays and scores. When the ball drains, nothing happens. I have 2 switches on the ball return and they are both cleaned and adjusted. I found that if I tap the playfield, the ball bonus counts down and scores, ball kicks out and advances. I was able to get to 5th ball and it just kept playing, BX didn't energize. When I pushed the relay in, it stayed locked in and game ended. Powered the game off and back on. Started a new game and with the love tap on the playfield, it would count bonus, and eject the ball, but never advanced to b2. I'm not sure where to look for my bad connection

So its 2 different issues. I've got a very fussy switch on the bonus unit that takes an ever so soft touch to make the connection. I've alcohol cleaned it, adjusted it, filed it and still giving trouble. When I make that work, it still does not advance to b2. The P relay fires after bonus completes its countdown, but stays on P1B1.

Thanks.. Bonus unit is working properly now. There must have been some grease or funk on the contacts. A good cleaning with some alcohol fixed this issue.

I finally got the ball count to advance as well. Not sure exactly which switch it was, but the problem was somewhere between G and motor 2c.

I'm still fooling around getting Jet Spin to play perfectly. Reading through the manual, it says the special can either be set for extra ball or credit. I'm missing some labels in the backbox and I don't see another jumper to switch between the 2 features. The game is currently set for extra credit for special. I get a credit when the red special is hit and also at the bonus score levels. There is one 2 pin jones plug in the back under the match enable jones plug and it doesn't have a label. I thought that may be it, I didn't get a credit or extra ball when I hit a bonus score level. I didn't test further to see what happens when a special is lit, but I'm going to try that tonight. Here is a pic of the plug I'm looking to identify.

PXL_20220501_125852076~2 (resized).jpg

Thanks.. I thought so, but during my test game I hit my 70K extra ball and the play again light didn't come on. After playing another game I realized my light isn't working

Thanks @HowardR!