Fiddled with the potentiometers to turn speech back on and turn sound down
Status changed: Broken → Good
Watched MPU and Squawk-and-Talk diagnosic LEDs at boot. Neither lit up. Checked input voltages at test points; 5V line seemed dead.
Power board looked pretty rough, so I dismounted it to check components. The 5V fuse was bad, so I replaced it. Other components seemed fine, possibly excepting BR2, which had different diode measurements on one side. One concern is that the BR1 mount looks kinda cooked. That bridge rectifier was clearly replaced, so it may be that the cooking is old. Current one is shallower, and has a nut between the board and the rectifier to make sure it stays in contact with the board underneath, which apparently acts as a heat sink.
Cleaned and reinstalled it; game plays as normal.
Status changed: Good → Broken
Machine not starting up properly. Only some lights turn on, back box half the lights are on. Buttons unresponsive.
Cleaned plunger, replaced missing washer on plunger. It is moving much more smoothly.
Sound and speech were both low. Used Deoxit on both volume pots. They should probably be replaced, but it sort of works for now.
Center bumper’s cap came off in play.
The pop bumper cap popped again so I used a 1 inch round rubber to weigh it down til a replacement comes. It does not affect the way the game is played.
