Quoted from frunch:
Man, if only every fix was that simple... I'd probably check everything else first and hours later realize it was something simple like that
Glad to know I'm not alone!
Btw, i really enjoy following your tech posts--I've watched you fix several games via pinside over the past few months and it's always a helpful, educational experience. Keep up the good work, man!
Thanks for the kinds words! I really love fixing these things and getting them back to reliable operation. I love it so much if I can do it vicariously through others, it is almost as fun!
Quoted from MoSeS_1592:
I tried flowing fresh solder to all the pins on J12 and J3 and to all solder points on the relay with no luck yet. Just curious, to rule out a bad relay could I use a piece of wire and temporarily short the two leads that the relay normally closes during play, essentially bypassing the relay? This would have the effect of making flippers operate even in attract mode, right? Does anyone know which two pairs of leads to short under the relay to accomplish this? If not I suppose I could Google up a data sheet on that relay. I believe the next (easiest) thing to narrow down is checking continuity of the circuit .
Oh, and both magnets do still work.
Cool, we know the power side of the circuit is solid and can focus on the ground side.
I took a look at one of my spare driver boards and confirmed the relay has 4 sets of contacts, 2 are used for each side of the flipper. I have no idea why Williams didn't tie all 4 relay contacts together... anyway....
If you want to rule out the relay, one way would be to remove the connector from the board, insert a small piece of solid conductor wire (around 18 gauge I think would match the diameter of the header pins) in pins 1 or 2 of the connector, and tie the other end of the wire to ground in the backbox.
Have a quick look at the left side flipper button in the cabinet. Make sure the wires are soldered on securely and that the switch looks no worse than the other side. They can be quite rough looking and still work fine.
Since your flippers stopped working mid-game, I doubt the problem is the relay and would suspect a bad connector somewhere.