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Re: screen colour missing
This problem could be a few things. first if you know how touse a volt metter go to the crt pcb on the end of the picture tube. Try to measer the voltage on the collector of the red drive transistor. If when the red color goes away and the voltage shoots way up past 150 or so volts then the red drive is disapearing from the video jungle ic or through one of the componets from it. If the voltage drops way low like less then 65 to 75 volts or less then theres a cold solder connection between the b+ feed resistor that suppys the b+ to the drive transistor the driver power supply sourse.. In an extremely rare case would the Picture tube be at fault but certainly could be. Good Luck OOps almost forgot it could als be a bad connection on the crt socket as well..
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It sounds to be a video output stage circuit fault. Check all the solder terminals at its CRT base card, including the solder terminals of the CRT base to the card. Re-solder all the suspected solder terminals by applying a little more fresh solder. Contact any service technician. Check the solder terminals of Red color output transisotor. If needy, replace it with a new one with same number printed on it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. http://electronicshelponline.blogspot.com/ Pull up older posts there.
The fault is 'one colour predominant/absent screen'
ok well "tube" tellys as they are called use an electro magnet to keep the picture stable and colours correct its called gaussing now if you have a speaker or something magnetic nearby it will stuff up the colors but only normally producing colors like purple,green, or white
if you have colors across the screen (that aren't caused by magnetic force) then you need to take it to a repairer or decide wether or not to buy a new one this issue can turn out to be quite hard to fix and can be expensive the different colored electron guns may be burning or burnt out causing pale color or it could be as simple as a power transistor in the H.V supply has shorted out..and causing power issues to the tube.
hope this helps,ben
THIS PROBLEM HAS HAPPEN TO ME WHEN MY LAMP WAS
ABOUT TO DIE. WHAT I DID WAS UNPLUG THE TV SET FOR
A SHORT WHILE, THEN WHEN PLUGGED AGAIN IT CAME ON BUT THE PICTURE WAS DIM AND THE LAMP ONLY
LAST FOR FEW DAYS AFTERWARDS.
# 1 above you have covergence problems ,there is a service flash from rca to fix your fault,ask your tv shop. fault # 2 above turn off the color and adjust your screen settings for a grey picture,set brightness and contrast to middle settings. # 3 fault read #1 cause if your auto focus will not correct you require service there is a harness connector that looses connection and causes several fualts on the 52" rca's you can repair the fault but if you miss the harness replacement you will do it again.
Did you change the resistor by yourself? I am not sure if your TV has manual adjust on the back of the TV that you can adjust. Some times turning the TV Off and unplug it from the wall helps because it resets the TV. Check your Back ground color and see what is the dominating color. Blue, Green or Red. If this doesn't work please call a professional to look at it.