Question about Toshiba 27A44 27" TV

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We can't turn off the picture

When we turn off the set, the sound goes off but the picture stays on.

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The electronics that controls the power supply operation are having some failures. It is possible that the control circuits for this are also at fault.

The set will require proper service from an experienced TV tech.

Jerry G.

Posted on Jul 12, 2008

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Why does the pictures takes a long time to come on? Then when it finally comes on, after a while, the picture goes off, but the sound stays on from the time the set is turned on.


Look for any loose soldering terminals at the picture tube base card. Resolder all the suspected solder terminals, by applying a little more solder. Repalce the picture tube connecting socket.

May 21, 2012 | Zenith C32V37 32" TV

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Tv keeps turning itself off and the white in the picture looks alittle off.


To get the right colors, especially a plain white, requires the right mix of red, green and blue from the picture tube. Sony TV sets have a circuit called AKB that automatically keeps the picture tube balanced by adjusting the signals to it. If that balance can't be achieved it shuts off the picture. This may due to tube aging so one of the color guns is too weak to adjust, or failure of parts in the AKB circuit itself. If the sound stays on and the power light starts blinking when the picture goes off, this is likely why.

On the other hand, if the set is turning off completely with no picture, sound or power light, the set may have power supply problems or defective parts in the picture tube high voltage circuits.

Since there are several possible causes, this set needs to be checked by a technician who can diagnose the problem and decide what needs to be done. It's not a simple thing I can point to and say "change this part". If the picture tube is the cause, it's better to replace the set. Otherwise get an estimate, then decide whether to fix or replace.

Apr 04, 2010 | Sony FD Trinitron WEGA KV-36HS20 36" TV

1 Answer

Picture does not stay on when set is turned on


its a switch fault, you need to get a tecnition but cheaper buying a new tv,hope this help

Jan 24, 2010 | Philips Magnavox 27MT5405 TV

1 Answer

TV goes to green, sound stays on a few seconds then TV shuts off.


Sounds like you have a bad picture tube. More than likely the CRT could be shorted, which would cause the set to shut down.
My first advise would be to power up the set with an isolation transformer with the voltage about 60% approx. 72 Volts AC, and monitor what happens when you increase the voltage slowly.
If the set remains on at 60 -70 %, then when increased to 90 - 100% it shuts down, you have something drawing too much current ( which could be the CRT )

Sep 14, 2009 | Sony FD Trinitron WEGA KV-30HS420 30" TV

1 Answer

Picture on 15 year old Trintron comes on briefly then goes black


if the sound goes out its not a tube problem . a bad tube would have no effect on the sound .you problem (my guess) is in the power supply . a modern tv power supply has parts of it that stay on all the time unpluging it is not the problem its when you plug it in ! the power supply gets a JOLT . you might get away with it ,you might not . thats why we install surge arrestors on power plugs and with expensive tvs i recomend a UPS a power unit that keeps the tv powered even wnen the line power is out . thats keeps everthing in the sets nice and even ,so the tv lasts longer ... a modern tv turned off uses about 1.40 in electric a YEAR in standby mode , so what are you saveing if you send you set to the landfill early and have to buy a new one ? over 1.40 in electric ? . turn down you water heater or something else simple dont be blowing out you electronics for the sake of a few cents ..... good luck .... if this answer helped please rate a 3 or 4 , this high rateing will hepl keep me in the paid answer department . thank you

Apr 19, 2009 | Sony Standard (CRT) Televisions

1 Answer

Standby Blinks 5 times. Picture goes off but sound stays on. Only hookup is Digital Cable - help!


Plug the electricity to a surge protector. I fixed my that way. Try it and let us know.

Jun 28, 2008 | Sony KP-53HS10 TV

1 Answer

Television


tbrace, your picture tube is getting a little tired, the "IK circuit" is causing the blanking of the video because the tube is not returning a large enough signal back to the IC that monitors it. Theres only one fix (besides replacing the tube) for your set and that is to turn up the screen control. You have to remove the back from the set and on the right hand side there is a large plastic part called a flyback transformer, with a heavy wire coming out of the top which goes up to the picture tube, mounted on the front of this transformer is 2 black blastic "philips type" controls, one over the other look closely and one will be marked focus(do not turn that one) and the other is the screen control, turn the set on and SLOWLY turn the control clockwise until you see a bright picture with white lines in it, once you see the lines turn it back until they disappear, (check several channels to be sure they are gone) your done, may last 3 weeks, may last a year, it`s all you can do, BMW Rider

Dec 14, 2007 | Standard (CRT) Televisions

1 Answer

Black screen


could be some bad solder connections on the crt socket or around the flyback area dealing with the brightness

May 12, 2007 | Panasonic CT-32G34 34" TV

1 Answer

Picture goes out, sound stays on


I am not familar with that particular set, but this is what I would check (assuming you don't have a surround sound system hooked up to it as it would sound like a tuner problem otherwise). If you have external Audio/Video jacks with cables hooked up to the Direct TV box, move the video cable and see if you lose video when it is jiggled. If so, you either have a bad cable or connection/connector. When you say you have to turn the TV off for about 30 minutes, do you leave the directTV box on? If so, then the problem seems to be with the TV. Otherwise, maybe the direct TV box is at fault -- leave the TV on and turn off the cable box for a half hour and try it again. You have a few possibilities here, good luck.

Jan 20, 2007 | RCA 27R411T 27" TV

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