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Picture tubes are one of the last components to actually die in any CRT television. Usually the only reason they are / were changed was due to colour degradation or dead pixels. I would be looking at either the colour boards or for yoke damage. If the picture still fills the entire screen then the high voltage section and tube are still OK.
Hope this helps a bit. Cheers Bob
the problem of your t.v is either lost contact on the vertical section or the supply of vertical I.C. was lost............if u're not an electronic expert just bring u're t.v to the nearest repair shop.....and that was a very easy problem..........
I did some reading on the net, try to "calibrate the screen". Try set the input to 1080i, then run the thx optimiser to give you a starting point, then try a bluray with a bright image.
Keep replaying the same chapter and try raising and lowering different settings. you may find that your brightness is set way too high and after dropping it from 90 to 29, you may find that detail will have crept into the image. Try giving the colours a boost as well.
The detail in HD is very subtle, and having a properly calibrated screen will make all the difference. So to answer your question: set your input to 1080i, make sure your HDMI is outputing RGB and start tweaking that screen!
Make sure that the color control level is set to the default or 50% to start with. This should be in the Video menu.
The colour for the tuner and for the encoded base-band video uses a circuit area called the colour demodulator. It is possible that this cirucuit area has failed and needs servicing.
now only visible in a thin horizontal line.
first of all you reduce brightness to monimum.
it just to protect your tv from crt demage.
your problem is in horizontal output section as you have mentioned that week or so ago the right and left bottom edges of the picture began to move in like a sideways triangle filled with black so this sympton is due to hor. section problem.
your flyback transformer or horizontal output might be defective.
but remember check for power supply is ok from
surge protector
hope this will help.
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