The new idol rotor lock is now in place, and the problem with several balls on the playfield is now solved.
The owner picked the game up last night.
Williams Indiana Jones pinball machine 2nd repair finished
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Williams Indiana Jones pinball machine 2nd repair part 2
The left jet bumper and the right slingshot are now repaired and working.
I removed the power driver board and replaced all the components for the right slingshot.
Testing showed that it now works as it should.
Another problem is that the game sometimes ejects extra balls when playing.
It seems not to happen when shooting the balls “normally”, when just hitting random targets without locking a ball.
Switch matrix seems to be working and are registering all balls correctly in the ball trough.
I removed the two opto boards in the ball trough and looked for bad solder joints, but it looks ok visually.
Testing of the ball trough showed no issues, even when fiddling with the wires.
Further troubleshooting revealed that it only happens when locking ball #2.
When ball #2 enters the idol, the previously locked ball were released to the playfield because the idol rotates to make room for ball #2.
It turned out to be the yellow plastic idol rotor lock that had broken off, which should prevent the ball from going back to the playfield at this time.
I placed an order from the guys at free-play.se so it should arrive within a week.
Thanks Simon! 🙂
This should be the solution for the several ball issue.
But i can only be sure when it is replaced and tested of course… 🙂
Williams Indiana Jones pinball machine 2nd repair part 1
This machine i repaired for about 1.5 years ago came back with some new faults that had appeared.
This time the left jet bumper and the right slingshot had stopped working.
The left jet bumper coil had a wire that were no longer connected due to vibrations.
Soldering it back on solved that issue.
The right slingshot coil was fried and were replaced with a new one.
Further troubleshooting showed that the TIP102 transistor controlling this coil on the driver board had burned.
I have now started replacing all the components in that circuit. (Total of 7 components)
Williams Jungle Lord pinball machine part 7 – Finished
Finished. 🙂
A broken diode on a roll over switch made it not responsive.
Replaced that with a 1N4004 and it is back in business.
(The remains of the old one seems to have been a 1N4148.)
Funny thing when i troubleshooted the right magnet that did not work, i discovered that it did not seem to ever have been working from factory.
The playfield had absolutely no wear over the magnet compared to the left one that had wear over it.
And one end of one wire from the magnet looked brand new, and could not ever have been soldered in, it just hung there. 🙂
Soldered it in, and now it works as it should.
All that remains now is a final wipe of the playfield and putting the glass back in, and polish it, then it is ready to be picked up.
Williams Jungle Lord pinball machine part 6
Playfield stripping starts…
Williams Jungle Lord pinball machine part 5
Now the sound board is finally working including speech.
Replaced the capacitors and also had to socket and replace both the CPU and the PIA for it to work.
(And also IC5 4050 buffer were socketed and replaced.)
All the boards now seem to work.
It is now time for the playfield, drop targets, switches, lamps, rubbers.
Williams Jungle Lord pinball machine part 4
Added 8A SB fuses for the two bridge rectifiers.
Due to a Williams design flaw these were not fused from factory, so if one of them shorted the game could catch fire and burn down your house. 🙂
I also changed the rectifiers for new ones.
Williams Jungle Lord pinball machine part 3
The Power Supply Board is now ready to be reinstalled in the game and be tested.
All capacitors are changed and all connectors are resoldered.
All fuses are also replaced.
A new connector for the GI were installed because of the previous wires soldered directly to the board.
A new fuse holder were also soldered in on the original spot instead of the external fuse holder that they did previously.
Unfortunately i had to solder in new wires for the incoming power because the previously modder drilled the original holes bigger to fit the larger wire they soldered in…
(I did not want to solder in a new connector that had no support from the hole itself.)
Williams Jungle Lord pinball machine part 2
I just changed the capacitors on the power supply board.
The big one is the last one to replace.
I have ordered it, and when it arrives i will change it.
Next is resoldering the pins. (Connectors)
Williams Jungle Lord pinball machine part 1
I got this Williams Jungle Lord pinball machine in for repair.
It has not worked in many years and need a complete overhaul.
The batteries on the MPU had leaked and caused much corrosion on the driver board under it.
I have not tried to boot it up yet due to the leakage, and i also want to repair the rectifier board first to be sure that the voltages are correct.
The rectifier board also has some dubious repairs that i have to fix. 🙂
