Hey I've been trouble shooting why my twister was intermittent. Most of the time it didn't work, but the fan aways works...anyways there's a relay under the playfield to the right of the magna board. I was suggested to crack it open and clean the relay and reflow the solder on the board. Took five minutes today to do both and for the first time ever my game is functioning 100% as it should . Try reflowing the solder on the relay board and carefully open the casing of the relay and give it a clean . Hopefully that's your issue too!