My Toshiba 27AF23 shows a strange color burn in the lower left corner. I thought my old amp/reciever was to blame because turning it on and off would affect the size of the color burn. It makes oranges appear purple and leaves blues unaffected. It also takes awhile for the "burn" to appear after the TV has been turned on...I've tried alot...Help!
If moving equipment and speakers away from the set does not help, try switching it off and the power switch (not just remote) for 30 mins. Most modern sets degauss even with the remote, but some sets only degauss (demagnetise) at full power up.
If that does not help, see if leaving a strong bright image (like colourbars testcard) makes it worse after a few minutes. If so, this could actually be a tube fault in which case you might have to live with it.
One other thing to try, at least temporarily, is relocating the set (switch off before moving it). Sometimes magnetism in the house, or even the Earth's magnetic field, can effect large screen sets.
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Re: Color "burn" in corner
Well i think this is caused by a magnetic field created by your speaker. is the speaker the same location for that color burn (lower left corner)? the only way to get rid of that is to remove your speaker or changed it. for all i know speakers used in tv's are magnetically shielded to prevent distortion in the CRT, because their location is usually near the crt. good luck!
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If you have a LCD-screen, not an old-style CRT-screen, it is the data-cable, and its connections, that are not transmitting one of the 3 "primary" colours, e.g., mix red & blue & green to get white,
but mix only two of those colours, and you could get pink,
because the mixing is an "additive" process.
If you mix NONE of the 3 primary colours, you should get BLACK.
If you see GREEN, you're seeing ONE of the primary colours.
Have you tried the "Magic Focus" Button/Option in the Menu Setup Screen? If you have and it still is there, You Have a Burned out Color Tube. It is Cheaper to Throw it away and Buy a New one.
I bought a used 46hm95 but it had a greenish "band" that streched from the upper right corner to the lower left corner. It was only noticeable on a white or light colored background, which is why I overlooked it when I tested out the TV.
I took out the bulb and shined a flashlight into the color wheel. I could see a fingerprint smudge on it. I took off the lower rear plastic panel. the rear is split into two section (the light engine is on the right. You'll have to unscrew a metal guard (three scerws), then disconnect the wires coming from the left section, and then unscrew the plastic guard that protects the lens. Then unscrew the light engine (two screws) and slide it out carefully (you don't have to take it completely out, just far enough to reach the screws to the color wheel covers). There are two covers protecting the color wheel, one plastic and one metal. Unscrew the plastic cover first than the four screws to the metal cover. I left the color wheel in place while I cleaned it with a microfiber cloth. I did pull the glass square in front of the color wheel and wiped that down too.
I put everything back together, and now the picture is perfect.
Things to remember are:
*Keep track of the screws and where they belong, as you remove them so you'll remember where they go when it's time to put things back together.
*Mark the wire connectors from any wire you disconnect in case you forget where they go.
*Be gentle with the color wheel and the glass square because they are fragile.
The degaussing circuit has failed. Usually this circuit kicks in either when you turn the set on or off. This clears up any magnetic interference on the CRT. Toshiba sets usually have a 3 legged thermistor that controls this. I suspect that this part is defective. The parts cost for this is under $10. Check around for a servicer that can replace it for you.
Move any speakers or electrical devices away from the set. It could also be anything electronic or magnetic. Anything near the set that generates a magnetic or electromagnetic field could be causing the distortion.
Convergence amp ic bad http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html http://www.hdtvoice.com/voice/showthread.php?t=28929 Or send to ptscorp.com http://www.hdtvoice.com/voice/index.php?s= good luck
please mark the post with a fixya
I have the same problem and now there is convergence problem with the entire screen, double images and ghosting ...i was told that some IC's are burned our ...etc..i'm waiting to see if they sell the entire board since the TV's are 10 years old... will let U know what i get as a response.