Another T.V.Question

[Console User]

When I turn of my T.V. and the picture first appears it takes awhile for the white to become pure white. It for just a second or two is light green but then turns to the pure white.

[radiotvnut]

Likely a sign of an aging CRT. One or more guns is taking slightly warmer to fully warm up.

[Console User]

Thanks for the information. No way to help this problem I assume without replacing the picture tube?

[radiotvnut]

If it looks OK after a minute or two, I'd leave it alone. If it gets worse, you might be able to rejuvenate it; but, at this stage, I'd leave it alone.

[Console User]

Thanks again. I know that when I had it worked on late last summer the TV Repairman adjusted it to make the white more pure in which it did. What really does rejuvenating do help with the weak color guns?

[sampson159]

if it looks good after a few minutes,leave it alone.a little age but not death.crt sets arent like the led or dlp sets we all have.it takes a minute or two for the crt to acieve full voltage and illumination.never rejuvinate unless it is necessary.

[old_tv_nut]

Originally Posted by Console User

When I turn of my T.V. and the picture first appears it takes awhile for the white to become pure white. It for just a second or two is light green but then turns to the pure white.

You say it changes only for the first few seconds and not at all (gradually) after that, as I understand what you wrote.

You didn't say what model you have. Some later model solid state sets had automatic white balance. Once it was set up, the circuit automatically adjusted for CRT aging. If that is what you have, the change in the first few seconds is normal as the circuit adjusts for the particular CRT in your set.

Edit: sometimes if all three guns are mismatched, you could see two distinct changes in color in the first few seconds; then stable after that.