So it's been about 3 months since I had my whitewater plugged in. I turned it on and it keeps resetting, usually before it gets to the end of the testing progress bar, at most a few seconds after it finishes the testing.

The only things I've done to it since last playing it is that I wheeled it across my basement, plugged it into a different outlet, and put lights in the topper for the first time. My gut says it's either coincidence or the lights blew something up.

My experience with the repair side of pins is pretty much limited to replacing a fuse, a burnt GI connector, and an opto. I did check the voltage at my outlet and inside the pin and both are a steady 123 volts. The power cord isn't loose in the back of the game. What's the next logical step? Reset all the connectors? It's humming pretty loud in the backbox, and once it screeched loud enough to wake up the neighborhood.

On a side note, are the sockets for the bulbs in the topper incredibly tight? I had a very hard time getting the bulbs in, and I actually broke off a couple sockets removing the bulbs. I just used standard 194 bulbs and they all lit up when I first turned it on. Now that I broke those sockets, I'm going to replace both of those light boards on top. Are these the recommended replacements?

https://ksarcade.net/white-water-topper-lamp-board-wh2o-tlb.html

Is there a benefit to replacing the topper light driver board too?

First I've heard about test points. Those are handy! So after researching how to test them, I'm getting 10 volts at TP2. I tried 3 or 4 test points and they are all roughly double what the board says that are. What's up with that? On the plus side, it has stopped rebooting, it's not even getting to the testing screen now.

Correction. I had my multimeter on AC instead of DC. TP2 is 4.94 volts.

Yes, 123 volts directly at the outlet.

I'm not sure if it accomplishes the same thing, but I measured voltage at pin 32 of the game rom as the pin wiki suggests and it came in at only 4.6. I reconnected about a dozen connectors on the power driver board and now I get 4.86 at pin 32 and it's booting up and staying on. I noticed a couple connectors with only 3 or so pins are fairly loose, so I'm assuming those could be the problem. Do they make plug-n-plug replacements for these cables or do I need to repin and replace them individually?