vertical collapse whoas.

jcterzin

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this monitor... Ive been asking around these forums about it and cant find any sort of schematic for it, nor even the model number. Its a Nanao-like chassis but I havent been able to pinpoint the model. Anyways, it has vertical collapse. Ive checked everywhere on the board for bad solder joints, found one, fixed it, and still it has vertical collapse. At this point im thinking that some component is bad, but without the schematic I dont see how I would check for which may be the culprit. Any Ideas what I can do? Ive cleaned the board, fixed the traces and solder joints, fiddled with wiring.... now what?
 
Start by replacing all of the caps. Then check all of the larger transistors.

Oh, and meter the vertical yoke to make sure it has a reading...
 
Start by replacing all of the caps. Then check all of the larger transistors.

Oh, and meter the vertical yoke to make sure it has a reading...

are you referring to the yellow and green wires on the yoke? I was under the impression that those carry quite a bit of voltage. if I test them while the tube is on, wont it just short?
 
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are you referring to the yellow and green wires on the yoke? I was under the impression that those carry quite a bit of voltage. if I test them while the tube is on, wont it just short?

Turn your monitor off and test. And the yellow and green wires are already "shorted" through the yoke, per se. You just want to check the resistance...
 
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