Question about Sony FD Trinitron WEGA KV-32FV300 32" TV

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1/3rd of Bottom portion of Screen is blacked out

The top 2/3rds of the screen works perfectly, however, the bottom portion is blacked out? (discription) Sony FD Trinitron WEGA KV-32FV300 32 (model) Thank you, Oliver California

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Re: 1/3rd of Bottom portion of Screen is blacked out

Sound like you have cloced caption text on, this is not the same as the normal cloced caption, look on your rempte for caption or "cc". if you don't see it you will find it in your menu & turn it off. have a good day.

Posted on Jan 02, 2007

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Toshiba CF32H40 32"TV shrinking picture with solid black on bottom. What causes this and can it be fixed?

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Disney princess tv suddenly narrowed the visible part of the screen. Now everything is squished into a two in wide band with all the rest of the screen is black.

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My screen is black at da top and bottom but its a pic in the middle.its just not showing the whole picture

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My 36 inch RCA tv has black bars on the top and bottom of the screen. The color is also dark even in daylight scenes. Can you help with this color.

as a general rule, vertical faults can be divided into two types: ones that cause geometric distortion (a circle will not be round) and those that simply black out a portion of the screen. the former are faults in the vertical oscillator, drive, or output stages. the latter are blanking faults. blanking faults are almost always caused by electrolytic capacitors changing value and thereby changing the timing of the pulses which blank the screen during vertical retrace. In other words, the pulses are turning off the video signals at the wrong time. the most common true vertical fault is geometric distortion and a foldover of white lines at the top of the screen. this is almost always caused by the electrolytic capacitor on or near the collector of the vertical output transistor or part of the IC which has the supply voltage (B+) on it. In the old tube days, the general rule was that bottom distortion was in the cathode of the output tube and distortion at the top was caused by a fault in the drive circuit. this may help the solution!!

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Model 42mf231d/17 42" plasma

If the loss of picture is either on top half or bottom half of screen. there are y buffer boards that go from top to bottom on left side of screen when looking at back that control those sections. when there is loss of half of picture then buffer associated with that area would be at fault and would need to be replaced. when i see a degrading symptom such as loss of picture on top half or bottom half leading to no picture issue normally you would check heat syncs on y sustain board and if not heating up after a few minutes of being turned on would recommend replacing y main and both y upper and lower y buffer boards as they complete a circuit

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Shrinking screen.

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Black screen, small portion of top of picture in view at bottom of screen

your tv has a vertical problem take it to a tech to have them look at it probably on transporting the set to your house it bump around.a look on lose solder could be the problem this could be verified by a tech.good need the repairman.

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Screen split with black bar through center, top of picture shows in bottom

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

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