I have a new to me #High Speed that I bought just a few weeks ago. Replaced the fuse holder on the power box and wiggled a few wires on the power supply I was able to get the game up and running. We played numerous games and ran all the test/diagnostic procedures which tested good. After I got all the parts ordered, I started a tear down of the playfield to clean. I'm still waiting on the new plastic to come in, but I wanted to see how the playfield looked with the new LEDs lights that I just installed. I turned the pin on and the MPU booted up, shut down and booted up again 3 times before the MPU stayed on. It was so quick, that I didn't have time to shut the pin off. Since then I wanted to test to make sure that everything was working correctly after the strange boot up. Here I found during the solenoid test, multiple solenoids out.
Solenoids 1 - 3, 5 - 9, and 12

I have not test the driver transistors yet as I feel that I may have lost a chip with so many solenoids out at one time. This is the 1st system 11 board for me to work on, so I'm not sure where to start to fix this problem.

Bump

Here is the picture that you requested. The power wire that I wiggle on to get the mpu to boot up looks like it is the solenoid power connector. The drawings that I have are not very clear.

I'm going to start checking power.

20190219_170927 (resized).jpg

I could not measure any power so I tried to ground the coils. That did not work either.

Yes I have limited knowledge using the digital volt meter. Most coils are working other then the ones that I listed above. I'm not sure how to check the Flasher #1-3 and left and right hideout relay. I have power at fuse #2 and the fuse is good.

But know I got another problem that should work first. The power supply I think keep losing it's 5 volts so I need to cap the power supply.

Just to be on the safe side I will remove the old solder (using a Hako FR-300) and re-solder the pins. I'm also going to order a cap kit from GPE for the power supply.
Anything else I should order while I'm at it?

Looks like GPE is closed for the time being. I need to find another source. Any suggestions?

Got it. Hold off on ordering till I figure out why and where i'm losing the 5 volts. Would you happen to have a readable copy of the schematics? The copy that I have downloaded with the manual is very blurry. I then should be able to know where all 5 volts lines are for testing.

Yes it holds 4.9 volts steady while booting up on the power supply.
For the +12 volts I measured +10 volts. On the -12 volts I measured -13 on the power supply.

Oh and thank you for the pictures. Far better than what I have now.

Thank you Grumpy, I will add the diodes to the order.

Do you have any suggestions on where to start to fix the solenoids?

yes sir

I got 29.6 volts for each wire.

Ok I found that 2 red and 1 red/white wire that go to the playfield while the other red one goes to the back box somewhere. Looks like it goes to the 4 large light bulbs on the back box door.

Not all of the solenoids that are not working are coils. Just listed as solenoids. The out hole, ball release and eject hole will be coils while flashers 1, 2, 3 and 4 are lights. then what is left is the left and right hideout relays.

Found it. I feel pretty stupid now. It was a red wire that when to one of the flashers that I removed when I tore everything apart to clean and polish the playfeild.