Hi, first time posting

We have Black Knight pinball machine and lately it's been ....quirky.... The best way I can explain it is the following:

Play the game for 15ish mins, everything seems to work fine, then it will just freeze. Turn off, then back on and the displays will strobe, the machine will make a clicking noise (not sure if it's a relay or multiple solenoids), if you don't turn the machine off for about 5-10 sec the solenoid fuse will blow, and the CPU will be in locked state. To fix the machine, replace the solenoid fuse, unlock CPU and everything seems to be fine for about another 10-15mins.

Not sure what's going on, not sure if I'm testing voltages right, but I have the following (Tested from grounding braid):
CPU: 4.92v, 9-10 White Pair: 95.7v, 15-16 Gray Pair: 11.6v, 11-12 Blue Pair: 14.75v, 13-14 Red Pair: 29.98v, 17-19 Yellow Pair: 5.45v.

Was unable to locate 12v today, but will try again in a couple days

Have some parts on the way to add fuses to the rectifiers and replace the caps on the power board.

Thanks!!!

Thanks for the quick reply! I'll work on that this week! Thanks so much!

You guys are good! Re-soldered all of the connections from the CPU and Driver board and everything is back to normal!

Now just got to fix up one of the weak flippers and it will be (almost) good as new!

Have parts for the flippers on the way. Planning to replace the double contact button switch and rebuild one flipper, just to see how it goes and what the power difference is between the two.

My issue was much different. I have a short video, but this is sightly different from what it was doing before. Before it was stuck Strobing like this, then the fuse would blow shortly after.