My zenith t.v. sat for some years un used, it was new, has no color anymore, thought that since it sat for so long unused that leaving it on even over night might fix it, still no color, tried adjustments, the only adjustment it wont recognize is color adjust, everything else can be, dark to light, sharp, contrast all work, no color or tint
SOURCE: help....all the characters on tv are green
Hi. When TV has one color only, Unplug CRT Socket. if voltages for cathodes within 10% of each other, Problem is with CRT. check green video amp on crt socket, it may be shorted or leaky, if ok have crt checked for short involving the green cathode.
SOURCE: Zenith 25" table top TV sentry 2
Many TV repair shops have what's called a tube rejuvinator. The modern versions can perform amazing changes to TV tubes. Many other techs treat them like snake oil but believe me I've seen the results of these machines and it makes one wonder why everyone doesn't use them. The new ones are logic controlled whilst the old fashioned or home made models aren't and can cause the tube to die completely. I've had a large TV not showing a picture unless all the lights were turned off and even then it was dim. 20 minutes later the TV was operating as it should. Two years later the same customer saw me in the main street and said the TV was still going like new. It doesn't work on every tube but I never had a failure with the unit I had. Mind you it cost $1200.00 but it made it's money back a few times. It's worth finding a tech who has one. It can be done in the home with no mess and only involves the back of the set and the neck board being removed. All up 30 to 40 minutes work. BMW
SOURCE: Color mostly green
I AGREE WITH MR TECHMAN, IN ADDITION TO THE SOLUTION SOMETIME OR MOST OF THE TIME THE PROBLEM IS ON THE CRT CIRCUIT SPECIALLY THE TRANSISTORS,,,HOPE THIS WILL HELP TKS...
SOURCE: The picture on my JVC TV is too dark
On the inside of the TV, on the flyback transformer there should be two controls. Turn the one that says "screen" very slowly clockwise while looking at the pix. The pix should get brighter as you turn it up- if you go to far you will see lines in the pix or the TV may shutdown.
SOURCE: Screen is dark with a blue hue to it. Tried
This is a board level problem.
If you can replace capacitors then check/change C405,C406 and C407.
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