5" BPC I got at thrift.

[Eric H]

I picked up this little GPX Jellybean on Friday, I normally don't bother with these unless they are something colorful but this one had an issue I though might be fun to try and fix, also i have the same set in yellow so it'll make a nice pair.

It said right on the tag that the TV didn't work, i could see it had a line burned into the screen indicating it had a failed vertical circuit.

Sure enough, powered it up and the vertical is flatlined.

If I push on the Vert Hold control I can get it to sweep but it doesn't lock in, just rolls constantly. I suspect bad capacitor or possibly a bad IC, these usually have an IC that control a whole host of functions like oscillators, sound and i.f. functions. I'm hoping it's just a bad capacitor in the vertical or a bad solder connection.

As for the line in the screen i should have a spare CRT somewhere around here, if not these turn up all the time in the thrifts, often in a "parts set" condition.