Swapped monitors, now blowing fuses

BJPalmer

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Thanks for looking.
OK, here's the backstory: I have two Capcom big blue cabs which had really dim monitors in them. I also had a Police Trainer and a Sega STV cab with very nice bright monitors.
I have never done a cap kit on a monitor, and in the interest of just getting my CPSII cabs up and running with nice picture, I swapped the monitors out of the STV and Police Trainer into them. The monitors in Big Blues had different molex connectors, so I chopped the lines and took them with. The connectors that ended up in the Big Blues had obvious Hot/Neutral lines, so they hooked up and ran fine. The big blues are OK.

The problem is: on Police Trainer AND the STV cab, the monitors originally out of the Big Blues had blue/red lines. In my haste, I hooked up blue to hot, and red to neutral without looking at the actual lines going into the chassis. They were reversed, and blew the fuses on the respective chassis'. In the STV cab, the 5amp breaker in the power supply also blew. (That won't reset, but that's another topic)
So...I corrected the lines, and replaced the fuses, but they blow every time I power them up.

Anyone know what I might check on the chassis for damage?

The STV cab has a Wells Gardner 25K7193 in it, and Police Trainer should be the same. Can't find a model number, but they both came out of Capcom cabs and have the same layout on the chassis'.

Would I be better off sending both those chassis' to be serviced?
Any help is much appreciated....
 
You need to doublesheck that both these monitors are the same, and they both have isolation transformers in the cabs. if you connected these to power without isolation transformers, then that's most likely why you are blowing fuses, and probably have a blown rectifier circuit on the chassis.

If you are blowing the main line fuse into the cab, then perhaps you have the monitor power wired up wrong.

And I've never blown a monitor just because the AC input lines were backwards...
 
Yeah, there's not really a wrong way to hook up the AC lines to a monitor... like Mod said... verify the isolation transformer is present for the ones that need it.

DogP
 
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