Coby TFTV4025

[JohnCT]

Originally Posted by Titan1a

I have a smaller Coby that needs a new mercury light. It works but the color balance is awful. Is it replaceable?

Are you sure the CCFLs are bad? Even smaller LCD tvs will have at least 5 CCLF tubes, not a single tube.

Generally speaking, they don't all go bad at the same time, and while I've seen a bunch of bad tubes, they generally show up as a reddish band across the area where the tube is. If the entire display shows poor color balance, I'm thinking it's not a bad CCFL tube(s).

Also, most CCFL tubes will reach a point where the voltage to maintain conduction rises to the point where it trips the controller IC and shuts down the back light.

If you post a model number, I can check on it. I've seen TCON boards cause weird color and gamma issues.

John