Atari Centipede Cocktail table game has no power

Arcade Collecting > Restorations & repair

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vapuser:
bperkins01, I found two 6 amp fuses in one of my drawers and put those in the fuse socket. I did this before I read your last post at 02:17. I disconnected the CRT, ARII and PCB. I then plugged in the game, turned on the bottom switch and while watching the two "Fast blow" fuses, I pulled up on the top interlock switch. As soon as I did that, the fuses blew instantly. Ya know, now I'm not sure if everything was working properly with the testing jumpers in place. Maybe those fuses were already blown at that point. Anyway, I'll go pickup a couple more fuses at the hardware store and test those two dpdt for a short with my meter. I'll let you know once I do that.

bperkins01:
I have a feeling its one of the interlock switches - test it with them bypassed and then with them connected.
or best with a meter of course to save fuses.
I think you are close...

vapuser:
It seems I remember early on testing that bottom switch. I wanted to know which way was off and which way was on. Well I got back from the hardware store and luckily they had 7 amp slow blow fuses. So I bought the last three packs they had. I'm going to try to do all the testing with the meter to save the fuses. I'll get back to you when I'm done. :)

vapuser:
Well, I did all the testing with my ohm meter at the J2 connector. I pulled up on the top interlock switch and turned the bottom switch on. I should be getting continuity across the two white wires and across the two black wires, which I am. I'm not getting any continuity across white and black which would indicate a short, correct? When I turn off the bottom switch, I'm not getting any continuity across any pins, which I shouldn't. Just for the heck of it, I checked for continuity across the two orange wires coming from the transformer. Each of those wires goes to a 7 amp fuse at F2 and F3. I'm getting continuity, which I don't think I should. right? Isn't this indicating a short across the secondary winding from the transformer? What do you think?

vapuser:
Another thing, before I joined this forum, the first thing I did was I replaced the big blue cap and also put in a bridge rectifier. I'm not sure I should have put in that bridge rectifier in. You gotta remember, I was working off of a schematic that should a bridge rectifier configuration instead of the one that Mike sent at reply 131.I wonder If I screwed things up by doing that. Or are both configurations accomplishing the same thing by changing AC voltage to DC voltage. I'm just trying to make sense of all this. Anyway, the two switches appear to be working fine. Not sure what to look at from here.

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