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Toshiba 32d46 single horizontal line in center of tube

12 months old - just off warranty Single horizontal line in center of tube. Sometimes normal picture for minutes or hours then horizontal line for minutes. Have it open need more detail to troubleshoot circuit board.

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  • doordoctor Nov 09, 2007

    Same problem ... where can you get schematic diagram to isolate the vert. circuit?



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  • 372 Answers

Hi. Check the frame output IC for dry solder joints.

Posted on Sep 16, 2007


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I have the same problem with a Toshiba RGZA 46RV535U purchased 2/2009. My picture gets darker in the center 1/3rd of the screen intermittently. I have removed and reconnected all cable connections on the...

The tubes are horizontal but require disassembling the cover and the inverter
board completelyfrom the chassis. There were 17 of these flourescent tubes stretching the ful length horizontally. They are so fragile.

Jan 01, 2011 | Toshiba Regza 46RV535U 46 in. LCD HDTV

1 Answer

Picture goes to a single horizontal line.

Your problem is due to failure of the vertical scanning circuits in your TV. This is quite common and is caused by aging components. Generally drying out capacitors
You got to be careful not to leave it on too long when the picture collapses, it will burn a permanent line across the screen.
If you are an electronics expert you can fix it if you get a schematic. If not please don't attempt to reapir it yourself since there is high voltage in side the TV.
The problem may get worse with time.

Mar 13, 2010 | Toshiba 32D46 32" TV

1 Answer

My CRT TV displays a single horizontal white line across the screen. It will flicker and try to display the picture. If you smack it you'll get a quick picture then back to a line. After about 10-15...

The single line means that the vertical deflection doesn't work. And since it is working when you kick the tv or has warmed it's clearly a bad connection - open the case and reseat the wires going to the tube coil.

Dec 21, 2009 | Toshiba 32A33 32" TV

1 Answer

Horizontal line problem

The capacitor in horizontal section is popped and it needs replacement. Check the horizontal section capacitors and change the faulty capacitor.

Nov 21, 2009 | Toshiba 32D46 32" TV

1 Answer

Single horizontal line in middle of screen

Yeah, thats the tube, buy a new one. It's 15 yo anyway, let it go ;) Best of luck!!

Aug 31, 2009 | Televison & Video

1 Answer

Single green line spanning across the screen horizontally

I was just watching TV and all of a sudden the screen minimized down to a single green line spanning across the screen horizontally. The label in the back says it was made in 1996 so it is an old tv. Can anyone help?

Apr 08, 2009 | Mitsubishi CS-27205 TV

1 Answer

36 Inch Toshiba - Single Bright Horizontal Line

You're losing your horizontal voltage that drives the fly back transformer. Poking around inside can be hazardous to your health since you have to worry about high voltages present on the picture tube even when the TV is off. You may still be able to get parts for those old TV's but they may hard to find. You can try here, but if you have no background in TV repair, it will be pointless.
TV Parts Universal TV Stands DLP Chips ShopJimmy

Mar 20, 2017 | Toshiba CZ36T31 36" TV

1 Answer

Panasonic CT-32G6E Intermittent single horizontal line

I would suggest to locate a part that looks like the one on this link and re solder all the pins, also check for any high power resistor nearby the IC295890 and put some fresh solder.
Let me know if you need further assistance.

Aug 07, 2008 | Panasonic CT-32G6 32" TV

1 Answer

White horizontal lines at top of picture

Yes, definitely worth fixing. The problem lies in the vertical deflection voltage-doubler circuit. The usual fault is a single capacitor of 100uF/35V that has failed. It is normally connected to a rectifier diode right at the vertical IC. Replacing the capacitor (no more than USD4.00 in price) usually gets it working perfectly again. If you are finicky around technical work, then a reputable local repair shop in your locality should do it quickly for you and charge only labour.

Jan 17, 2008 | Toshiba MD24FP1 24 in. TV/DVD Combo

1 Answer

JVC 27" CRT TV AV-27BP3 display shows single horizontal line

I have a similar problem on my CRT computer monitor (AcerView 76c). It is an old screen and I think it is just at the end of its life, much like your TV. Having some background in physics, I would be pretty sure that the problem is with the cathode ray tube's vertical deflection system. The horizontal deflection electrodes are working while the vertical one is not. This results in a display of a single horizontal line (or in my case, a few superimposed) in the centre of the screen. Where both X and Y (horizontal and vertical) deflectors fail then the electron gun firing would result in a single bright spot in the dead-centre of the screen.

So really, we have no choice but to move on and buy a new set as repair is probably just as, if not more, expensive than replacement with a new device. Seeing as your post was in 2007, I hope you managed to solve the problem.

Best wishes,
SZ (Sydney, AUS)

Dec 24, 2007 | Televison & Video

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