1966 GE PortaColor Restoration

[Dubis7]

I may have something here.

I'm noticing that my voltages are consistently 10 or so volts higher, except the HV which is several KV too low. I traced it back, and discovered that C103 has 0 volts when measured against ground.

I've ordered a replacement. Could that be related to my issue?

[Dubis7]

Also, if L34 is measuring 36 ohms, could that be an issue?

[jr_tech]

Originally Posted by Dubis7

Also, if L34 is measuring 36 ohms, could that be an issue?

No.

Also re-check your C-103 reading, it can’t be 0 volts, if it is wired correctly and supplies are normal (or slightly high).

What does your boost voltage measure?

jr

[Dubis7]

C103 should be measured in VDC, correct?

[Dubis7]

Okay, I think I measured C103 wrong. I was measuring from the ground end of C103 to another ground point, and that was 0 VDC. I measured across C103, and it came out as 152VDC

Boost voltage (from pin 3 of the flyback against ground) is 664VDC

HV is still hoving around 10 V using my high voltage probe. I'm noticing that the image is somewhat dim, and I have to have brightness up above center to see it.

[jr_tech]

In its present condition what does the picture look like? Can you connect it to a signal source and take a picture?

jr

[Dubis7]

Sure. I'll take care of that shortly.