Trinitron Horizontal Flicker

[old_tv_nut]

Is the Sony being fed the same RF signal as the Panasonic that doesn't have the problem, or are you using a composite input on the Sony? Whatever is the cause, blacks are being clipped before the signal gets to the brightness control, if turning up the brightness just makes them gray.

[Outland]

Originally Posted by old_tv_nut

Is the Sony being fed the same RF signal as the Panasonic that doesn't have the problem, or are you using a composite input on the Sony? Whatever is the cause, blacks are being clipped before the signal gets to the brightness control, if turning up the brightness just makes them gray.

The photo is of composite, but I tried RF and it looks the same.

Here is a photo of the Panasonic showing the same scene.



There's a book in my university library covering CRT repair from 1989, it might be a useful resource for me.