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Re: picture has a yellow goasty apprarence on white areas
This is do to a problem with the inverter its a small circuit board that controls power and other signals to the montior/Tv replaing this will shore this up and you be happy you did Thanks for using Ficya.com for your answers.
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If you turn color off and stand back and examine the screen---if it is not black and white but yellow looking you have bad Glycol in the blue picture tube which is quite common.
Easy way to know for sure is with set on and rear cover removed peek with a small mirror at the three lens---don't touch anything with the set on===each tube red,blue, green should have a picture with the set on.
Likely you will find the blue one looks like a floodlight with little or NO image/picture.
Here is what to do to confirm what problem is, go to black and white program and make sure color adjustment is turned all the way down to zero.
What you are looking for is what color is the screen?
If it a primary a yellow looking screen (all or most) you have bad Glycol in most likely the blue tube. These sets have a sealed area with a sealed area with Glycol (it is like antifreeze and meant to keep the face of the the three picture tubes cool).
What can happen (usually the blue) is it becomes contaminated with bacteria====note, if blue tube is contaminated you will have yellow screen (red and green=yellow.0
The real easy way to confirm if this is the case is with the back removed and access to the three large lens on top of the tubes look into each lens, if the blue one has no picture and looks like a floodlight, but the red and green have a picture, YOU HAVE FOUND OUT YOUR PROBLEM.
I can tell you if this is the case I can tell you what is involved, this most likely is not a do it yourself repair but i can tell you what is needed.
This TV has had a long life. Your picture is looking more yellow these days because the Blue picture tube is wearing out. Not saying the Green and Red tub are much better, but Blue tube is a major player in the picture brightness and white balance (the color of white which the TV reproduces). The cost involved wouldn't be justified. You should enjoy the balance of the TVs life; when it's time comes... have the new TV delivered and ask them recycle this one. Best wishes.
The color image is comprised of three colors, Red, Green, and Blue. All the other colors are mixtures of those colors. The yellow picture indicates that your set is lacking sufficient blue drive.
First of all check to make sure that the tint control is not misadjusted. The next thing is dependent upon the age of your television. If it's an older set that yellow tint is a sign of an aging picture tube. If it's a newer set, less than 5 years old, have it analyzed by a electronics technician that is familiar with televisions if he is skilled enough he will know right away if it's the picture tube or not.
Try to remove the cover of your unit and clean the tube with a dry cloth. try to look for the anode cap. the one tht is connected to your tube if there are holes in it. This causes the problem.
On these sets its the coolent in the tubes thats comtaminated, the picture tubes are soft and are bad, or theres a screen voltage capacitor thats bad in the scan power supply. If the tubes are going bad, a shop with a crt rejuvinator MAY be able to clean the tubes and bring a little more life to them, BUT if not, theres not much you can do as a consumer, as there are no user serviceable parts inside these sets, as all the parts are soldered into place and a TV set is no where to be expeimenting with. Sorry man if the sets over 8 to 10 years old ,its most likly time to put this one out to rest and get a new one. Good luck
The dark picture is a bad capacitor for the screen or drive voltage for the picture tube driver transistors. The other problem of streaking is one of the same. Thats the indication that a capacitors defective . It could in a rare cas ebe a defective or gassy crt as well but 99% of the time when a crt is said to be gassy its nothing more then poor drive to the crt. Good luck