I haven't played my Road Kings in a while and decided I would start playing it again.

In the past few days I have played a total of about eight games and during two games it just randomly died. I will be in the middle of gameplay and everything shuts off besides the GI. The control lamps go out, the flippers lose power, and the displays all shut off. I can power cycle the game, play a new game, and it will be fine.

Any ideas of the cause or what I can look at to figure out what the problem is?

Is there a way to test for this? I'm guessing not and probably best to just go ahead and replace the power supply caps?

I haven't had a chance to do anything with the power supply capacitors but I played a few games and had a couple weird things happen. One time the control lights froze but the game kept playing. Another time the displays were displaying funky stuff- see picture.

Does this behavior also sound power related?

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I just remembered another weird thing that it does that doesn't make sense. When I boot the game it says to adjust switch 43 for the left kicker. When I put the game into switch edge test and activate the left kicker / slingshot with my finger it fires appropriately and shows up on the display.

I can double check but I think I tested both. Aren't both switches daisy chained together? In switch mode, there isn't a designation for two kicker switches, is there?

Okay, so we can rule out it being one of the two slingshot switches stuck closed. Any other reason it would say to check the left slingshot switch even though it is functioning properly or any other explanation for the odd behavior I'm experiencing?

Thanks for the replies and telling me what to look at!

When I get a chance I will check these things and report back.

I hooked up a DMM to the 5 volt test point on the CPU. In attract mode it was 5.10 volts and during gameplay held steady at 5.09 volts. We let the game sit in attract mode to see if it changed once it had been on for a while but it didn't.

We looked at all of the connectors on the power supply board and also where they go into the mpu. Everything looked good. I guess the next logical step would be to rebuild the five volt section of the power supply board. I looked for a rebuild kit on Marco's site but didn't see one.

Does anyone know or can't point me in the right direction to a list of components I need to buy to rebuild that section of the power supply?

Thanks for the info! I'll check it out and report back.

Everything seems to be good on the 12 volt. The lowest I saw was 12.08.

Ok, I might pull the power supply and reflow those pins. Thanks for letting me know which pins to look at!