Zenith 25CM30

[iong]

On my 25CM30 and also 26KC20 When there's a bright or white background the images in front of the white all of a sudden gets too much contrast and the color saturation increases making the rest of the images look dark. What's wrong? The AGC control is set per manual. Thank you, Perry

[zeno]

IIRC they had a "blanking" tube ( 6KT8 or 6GH8 ? ). Try a NOS or KNOWN good tube. Dont trust a checker ! Sounds like the video is dropping out but
the color stays so look at the video chain. AGC was a good try
but AGC overload usually also gives tearing & audio buzz.
Good luck
Zeno
LFOD !

[iong]

There are a few 6kt8 in the color circuits.Which one controls blanking and what does it blank.Thanks for the information. What's IIRC?

[luRaichu]

Originally Posted by iong

What's IIRC?

Stands for "If I Recall Correctly". Welcome to the internet.

[iong]

Oh.