Sanyo EZ20 - I shorted something and now need Help with vertical collapse

Vectorman

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Sanyo EZ20 - I shorted something and now need Help with vertical collapse

Guys,

I made a mistake and shorted A1/FM to ground. When I did it, I could smell smoke and noticed I had vertical collapse. BTW, this was a fully working, capped monitor that had been burned in and was working well.

Since this happened, I have replaced TR401, TR402, TR403, IC401, and numerous other components. I've tested virtually every resistor on the chassis. I know it can't be a bad soldering job or a broken trace, as the monitor worked fine until I shorted A1/FM. Something burned up. But I can't tell what. I also replaced C410 again, just in case. The yoke is showing about 54 ohms on the vertical side, which matches all my other EZ20s (although it seems very high to me).

BTW, the reason I shorted A1/FM is that I was trying to hook up one of those inverter boards that allows you to use an EZ20 with a regular video signal (non-inverted). You know how the inverter board has that red wire that has to be attached to the chassis? Well, I was trying to attach that red wire to the chassis and accidentally shorted it to ground.

I've wasted most of the day trying to get the picture back and have struck out, so any help anyone can offer would be greatly appreciated.
 
you may have killed the IC.

send it in and i will fix it.

Peace
Buffett

Thanks for the tip! Unfortunately I already replaced the IC. I may end up sending it to you. I just hate to give up....I'm a pretty relentless person.
 
no prob.

i know where you're coming from.
i don't like to let things whip me either.

VC on the Sanyo is one of the hardest things to fix.
it can be any # of things that go bad.

shoot me a PM when you're ready.

Peace
Buffett
 
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