Color Fades In and Out

[Dcpatter78729]

I have a Sony Trinitron circa 1992 Model #KV-27TS27 When i turn the TV on I get a color picture. The color is weak but its color. A little while after the TV warms up the color fades and the TV goes all black and white. It will change between the two but mostly stays black and white. Is there anything you can sugest to help me fix this problem? Thanks

[torbjorn]

Do you have the same problem regardless of whether you supply a RF signal or a baseband video signal (to SCART connector or video input) to the TV?

If you only have weak color with RF signal, it could be as easy as that the AFC coil needs tuning.

[dcpatter78729]

Yes it is the same with either signal type. Any ideas? Thank you for your reply. This problem is driving me batty.

[torbjorn]

Have you checked for bad solder joints etc around the chroma IC? Also, check the signal levels before and after the delay line with a scope.