Can you help another brother out? Lol. Been having weird issues in my MH.

My 10k (or extra chime ) is stuck on. Continuously. It first burnt Q7 on my driver board. Had it repaired and my mpu board checked out. Nothing wrong on it

Checked all playfield switches. Nothing seems stuck.

When I had the burnt Q7 I also removed and replaced the actual Chime coil - the sleeve was melted and the rod wouldn’t move. Now moves freely but as soon as power is turned on it fires

Is this a connector issue?

Hey thanks! Can’t get to it until mid week. It I’ll report my readings and some photos ASAP.

Ok - got my boards back - the CPU was fine , no issues. On both of my SDB’s (I had one as a spare) the Q7 was blown. All fixed.

I put one SDB and the CPU back in- and chime coil is no longer continuously firing. Actually working / sounding correctly.

I can still get some meter readings if needed but thought I’d ask- what could have caused both SDB’s to fail on the same transistor.

Note - when I first started looking - that extra chime coil was toast. Sleeve melted inside. So did a bad coil burn up the boards? Or vice versa?

Makes sense Thanks!