Bally Harlem Globetrotters pinball machine part 3

The power supply board were next.
Most connectors were soldered directly to the pins on the board.
One of the three rectifiers were previously moved to the backbox with wires.
And one of the rectifiers on the board were broken, so i decided to replace them all.

All fuses were replaced with correct values.
(As always several fuses were way to big…)

All the connectors has now been replaced, and the wires are repinned.
(The rectifiers and heatsink are not yet replaced in the picture.)

A few before and after pictures is also in this post.

MPU-board had acid damage as they usually have.
A bit of cleaning together with vinegar hopefully prolongs the boards life.
There were many chips on the board that was bad and had to be replaced before it booted again. (CPU/PIA/5101/6810)
A new battery holder were placed in the backbox.
Reflowed the connectors.

All plastics were cleaned. (And the playfield.)

All bulbs are replaced with #47s, and all of the rubbers are now replaced.

The fuse holder under the playfield was broken and replaced together with a new fuse.

Capacitors were replaced on the sound board, and U11 were socketed and replaced with a new 86L93.
Reflowed the connectors.
(The sound board was making no sound at all before, but now it is up and running again.)

A few switches on the playfield were showing as stuck in the self test, and required new diodes and capacitors to get them going again.

The solenoid board required another chip to be replaced before all coils were functioning again.

The lamp driver board also required a new chip and a new transistor before all lamps worked as they should.

Two displays were dead.
Reflowing all of the displays pins and replacing the usual resistors that often goes bad made all the displays working fine again.

Getting close now… 🙂

Next are the pop bumpers..

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