KT-2100SF / K1-2-V0 with STK 73410 II Regulator Schematic Needed

lazersteve

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KT-2100SF / K1-2-V0 with STK 73410 II Regulator Schematic Needed

I need to locate a schematic for a 19" monitor chassis from a Galaga + Ms-Pacman cocktail machine. The heat sink in the HV section has a label with KT-2100SF on it. The bottom silk screen list it as a K1-2-V0 but my copy of that schematic does not have a STK regulator pack on the primary side.

The unit keeps eating secondary B+ diodes (D605) and it's associated capacitors and resistors. Occasionally it will also eat the STK 73410 II ic and it's surrounding caps and resistors. I need to verify all the parts are the correct values and wattage. The repairs last about a month or two then the parts fail again. I'm starting to suspect I have a bad coil or flyback in the HV circuit as I have completely rebuilt the primary side (aside from the xfmr). I want to verify all of the components have been replaced with the exact original values, so I would like an accurate schematic.

Here's a photo of the chassis:

http://forums.arcade-museum.com/attachment.php?attachmentid=41289&stc=1&d=1279849274

Any help would be greatly appreciated.

Steve
 

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The day I posted this thread the unit was repaired again (Primary regulator tested ok, secondary diode and capacitors replaced as they were obviously popped) and placed back into service. The repairs lasted 30 minutes and the secondary B+ diode (D605 failed again).

If anyone is following this thread and has seen a 19" monitor chassis with a similar primary regulator design, please reply with references and or schematics. I'm working off of the example circuit from the STK 73410 II datasheet for the primary side component values at this point. The originals were burnt beyond recognition.

I'm anxiously awaiting a reply before I move forward feeding this chassis any more parts.

Thanks,

Steve
 
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