vertical lines in a Toshiba TV

[old_tv_nut]

"Also, I want to reiterate that this bars issue only shows up in the image of a certain brightness value (and therefore, I would assume voltage value). It's somewhere around 50 IRE I think. If the image is brighter than that, it won't show up, and if the image has bright areas and dark areas, it's only visible in the medium dark areas, and general only really visible in solid colors like you see in most video games."

If the cap is the problem, doubling the value should halve the contrast of the bars. Sounds like that's not happening.

Peculiar that it only shows up at medium gray level. How does it vary when you turn the brightness up and down with a blank screen? Worse at low brightness, medium at medium brightness, goes away at high brightness?

[vol.2]

Originally Posted by old_tv_nut

If the cap is the problem, doubling the value should halve the contrast of the bars. Sounds like that's not happening.

Peculiar that it only shows up at medium gray level. How does it vary when you turn the brightness up and down with a blank screen? Worse at low brightness, medium at medium brightness, goes away at high brightness?

Yeah, I can't say if it's halved or not. It seems to be less, but it's hard to tell. They are definitely still there.

The bars show up when video mode is turned on, but no source is connected as well. I can induce the bars by turning up the brightness on a black screen. In fact it's most noticeable doing this, and it seems to be most obvious when the screen is grey. Turning the brightness up past a certain point makes the bars go away. They might still be there (I assume they are) but I can't see them. I guess you could also say that I can see them clearly enough all the way down to just before a black screen.

The bars are wider on the left side of the screen and get very narrow on the right side.