The picture on my tv is too black and red. Sometimes the picture is pretty good but it always ends up with too much black and red that won't adjust out. Someone told me it's the picture tube and to trash it, but it has an okay picture sometimes, so I don't want to do that right away.
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it must be your tv was heated on long usage.
sir, try to go to your nearest expert technician. they have tools to use on fixing your tv's hardware. or see if your tv has a warranty to send it back to the place what youve bought it. hope that helps!
What brand and model # is the tv? This is very important as far as researching your problem. You probably aren't the first or the only person with this problem. There are typically four to 5 boards including an x main, a y main, power board and others. Sometimes easy stuff like capacitors or fet's go bad and you can fix it yourself pending your soldering abilities. Sometimes whole processors go bad or entire boards and these need to be replaced. Sometimes people want to fix sometimes they want brand new
The two most probable failures is the backlight for the display or the inverter that powers it,
If the ends of the fluorescent backlight tube are exposed, check if the ends are black.
If not, then the inverter is probably bad.
These are mounted on separate smaller boards that are pretty obviously connected to the backlight tubes.
Most times it will be physically busted inside. Sometimes not and you will have to replace it to know. If the lamp light is flashing, chances are pretty good that is all that it is. Let me know if I can be of further assistance.
This should be a quick fix. Try resoldering the vertical IC. This is a small flat IC attached to a heat sink with about 11 pins. It should be marked LA7837 or something similar. That should resolve the problem.
Good Day, LDS also; You may have a poor seated cable connector. Unplug TV from A/C, remove back look for a large black connector. It connects between the Main Digital Module and the Drive PWB. Re-insert both ends several times to make better contact, use contact cleaner if have but not always needed. Good Luck, big IRISH.
Go to the video menu and turn the color control to minimum. Determine if you have a black & white picture or is it green & white. If the picture is greenish, you have a problem in the screen circuit or possibly a bad picture tube. If the black & white is ok then I would suspect a problem in the chroma circuit such as a bad video jungle IC or a crystal. However, because your set had a red blinking issue prior to your existing condition I would lean towards the picture tube as the source or your troubles. You can try a simple test to determine if you have an intermittant short . Take the back off the set, and with the insulated end of your screw driver, very very lightly tap on the neck of the picture tube near the socket. If you see green flashes or hear loud snaps in conjunction with your taps or the green tint goes away, chances are the tube is the cause. If so, you might try installing an isolation transformer on the picture tube. Good luck
The most common problem (I have fixed lots) is the Vertical amplifier has developed a loose connection. It probably just needs resoldering. As things expand it makes and looses connection you picture goes in and out. The vertical chip is a large black chip that gets hot, over time it degrades the solder until a connection is damaged. Most newer sets have a protection circuit that senses the lack of height, and shuts down the picture tube to save it. When the picture dropped to a line on older TVs and left that way too long it would burn a line into the face of the picture tube. You then had to have the picture tube replaced along with the vertical amp. it's kinda like a screensaver for your TV.