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.
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.)
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)
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. 🙂
This machine is now finished and returned to the owner.
A short summary of some of the repairs :
-CPU-board : Acid damages repaired, and damaged IC:s/resistors/capacitors were replaced.
-Driver board : Two new connectors for the G.I. is mounted, and some capacitors were replaced.
-Sound board : Re-seating of all connectors restored the sound.
-Opto board ball trough : Resoldering of all resistors fixed everything wrong with this board. 🙂
-Thermistor at the line filter was replaced because the old one gave up after about 20 power-ups. 🙂
-Linkage to right slingshot were broken off, so it were replaced.
-New bulbs, new rubber and a slight cleaning.
Game now works 100% for what i can tell. 🙂
I got this Williams Indiana Jones pinball machine in for repair.
This machine has multiple problems.
It starts up, and it is possible to start a game.
But it ejects two balls every time.
(Bad optos maybe?)
There are no music whatsoever, and no soundeffects, just a random “ding” now and then.
When i tried to get into the test menu, it did not respond to any of the buttons inside the coin door.
So i measured all the cables from the buttons up to the connector on the CPU-board, and they were all ok.
Tested the buttons again, but still no response.
I then removed the CPU-board and placed it on my workbench to give it a good visual inspection.
Acid-damage had taken 6 IC:s and some resistors/capacitors…
So i removed IC:s and the battery holder, and will clean the board up before putting in sockets and changing some resistors and capacitors.
The driver board also has some damage on some connectors due to heating, and some hacking has been done previously that i have to fix.
