Hey. I need advice. I just helped a local guy install a new switching power supply into his TRON. (It's a Happ Controls switcher, with a Tron MCR adaptor from ArcadeShop).
The instructions recommended tapping AC power for the switcher anywhere after the main power switch. It even suggested tapping it off the marquee light fixture. So that's what we did.
I wired the switcher to the rear florescent light input (before the filter). We figured out that BLUE is hot, BROWN is neutral and green/yellow is ground. Here's a schematic:
http://www.crazykong.com/manuals/Tron.man.pdf (page 96)
Everything wired up, we powered on and I measure the AC going to the switcher and it was good (125). Measured the +5 and it read 5.01. The game itself showed nothing on the monitor and there was a repeating "thump" sound from the speakers. I figured it was the game resetting.
Now the thing about Tron is that everything is cramped, and I don't know where to get access to a test point to measure voltage at the game board. So the best I could do was adjust the switcher power a little, then turn the power on and off to restart the game. The last couple times, I used the game board reset switch instead of powering off completely.
The second or third time I pressed the reset switch, a few blew. It's the 1.5amp fuse that is on the same line we tapped for power.
So... any ideas as to why the fuse would blow? Is tapping power that's going to a florescent light bad? Would that cause fluctuations in the AC? Where can I find a test point on the game board?
~Ray