Yesterday tv turned on normally,mid-morning I noticed a bright horizonal line about 1/4 in.wide centered in the middle running from side to side. Audio is fine. This just all of a sudden happened it was not gradual. Is it fixable or dumpable?? Please HELP!!!!
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Re: T.V. has no picture
I noticed a bright horizonal line about 1/4 in.wide centered in the middle running from side to side. Audio is fine. This just all of a sudden happened it was not gradual.
it is due to vertical section failure.
please minimise bright to protect crt.
1 check supply to vertical section.
2 check for ic failure in vertical section
3 check vertical output section parts.
Is it fixable or dumpable?? Please HELP!!!!
yes it is fixable
it is common problem not major one.
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My 3-year old 52-inch Toshiba flat panel TV (Model # 52RV53U, Serial # AM409000295) developed a display issue (purchased Aug. 2008, manufactured July 2008). Vertical multicolored lines appeared on the screen just left of center. The band of thin vertical bars is 5.5 inches wide. The lines are about 1/16-inch wide. They are stationary, always exactly in same place. They over-ride any other picture on the screen (no transparency). They are there all time even with no video inputs to the TV after the unit is turned on. See picture #1. The TV works well in every other respect, but, obviously, it is annoying to watch the picture with the color band blocking about 1/6 of the picture.
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I already swapped out the TCON board with no improvement and replugged the TCON board cables with no improvement.
Most likely it is the flat panel tab bond failure (panel made by Samsung). Further updates will be on my Facebook page.
The deflection board in failing, eventually it will not come on at all, disconnecting power is only reseting the HV shutdown protection circuit which is the reason your set if failing. Have a technician replace the Horizonal Output Transistor and the flyback transformer.
have a Mitsubishi TV 1993. Model CS-35301. The problem is that there is a white line that is running through a blank screen. The sound is fine just no picture. Have you heard of "Vertical Collapse?"
I would love to save the TV.
nothing to worry just minimise brightness to avoid screen burn.
means one bright hor.line in the middle of screen.
this problem can be solved
1 check vertical yoke connector or wire loose
2 check supply to vertical section which normally comes from EHT transformer
check components in vertical section or print loose
please check the high current area around flyback transformer, horizontal output transistor as well as the deflection connector for bad soldering.
If you need more info please advice.
It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck