This is unbelievable . I posted a question about my jungle lord earlier today , now I go to play space shuttle and none of the solenoids work.
The machine turns on and even starts a game but the ball never shoots out and no other solenoids work
In diagnostic mode none of the solenoids fire.
Checked fuses and they were good I even replaced them for the heck of it.
Swapped out the power supply , same result.
One other thing , when I start a game the score jumps to 51500. weird.
What can I check next ? I have a dvm just not sure what to check.
Thanks for any help. Rich
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I tested the bridge rectifiers . they were both .485
I also used a jumper wire to go from ground to the transistors that control the different solenoids. None fired

Thanks. Sorry to sound like an idiot but what is that part you have highlighted ?
I checked the voltage at that fuse and I had 30 volts

All the wires are secure on the rectifiers

I found a bad diode on the power supply . D2 its a IN4001 diode. Could that be the problem? I dont have any . I have to get some.

OK I have the 4007 diodes. and I will check all the power under the playfield That will keep me busy . Ill report back

I tested The coils with the game started there was no voltage at any coil. all the coils tested good continuity. None of the coils fire during the self test functions. I have voltage at the fuse and at the rectifier. I traced the wires on the bottom of the playfield briefly . All the connections are intact at the coils. I still need to check voltage at j3 6-7-8

This was RIGHT ON!! It is fixed. I separated the playfield from the rest of the machine I checked for continuity from the black connector red wire onto the solenoids on the playfield. They all had continuity . OK set the play field aside and concentrate on the machine. Checked continuity on machine from black connector red wire to solenoid connector on power supply . It was good. Powered up the machine and started a game I had power to the black connector red wire. So I connected the two halves and now it works. Unreal. A bad connector joint that has been connected for 2 years. SEE PICS
Thanks everyone for your help. Rich

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