Question about RCA 27F634T TV

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Set shuts off after a few seconds

After set is turned on it only stays on for about 30 seconds showing a blue screen then it will shut off immediately.

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Re: Set shuts off after a few seconds

I do not have any antenna or cable tv hooked up to this set i use it in my kids room for dvds.I turned it on one day i herd sound first then a picture that was a green tint snowy with white lines through it and then it shuts off,all within 30 seconds time.

Posted on Aug 16, 2008

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Re: Set shuts off after a few seconds - RCA 27F634T TV Standard (CRT) Televisions

Ts it in video mode?

Posted on Nov 20, 2007

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Set comes on with a blue screen with retrace lines,then shuts down. Turned down screen control on flyback, set stays on cannot control brill

The set is shutting down because the picture tube is been over driven, it is most likely the picture tube has a short in the blue gun, turning down the screen control drops the voltage to a safer level. The only other possibility is a short video driver and open feed resistor usually located on the video board on the back of the picture tube.

Feb 23, 2011 | Sony KV-32S40 32" TV

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My television is a Samsung Slimfit tx-t2782 and I'm having problems with the tv staying on. Everytime I plug it in it comes on for a few seconds it shuts itself off. I was wondering if there is anything I...

I AM HAVING THE EXACT SAME PROBLEM WITH MINE ! But before mine turns off, it shows a blurry squiggly red mark on the screen then shuts off and wont turn back on sometimes for several hours.. And everytime I CAN get it back on, I have to unlpug the whole thing and plug it back in...

Nov 09, 2010 | Samsung SlimFit TX-S3082WH 30" TV

1 Answer

When i turn it on it has an horizontal blue line in middle of screen then comes on, when shut down it has the colors in the middle in tight formation then suts off. is it the picture tube

the set having blue scteen when the nosignal condition so blue horizontal line due to failure in vertical deflection section and system control detect the vertical delection failure . so system control farce to set to shut down pls repair the vertical section and system should be ok

Aug 26, 2010 | Samsung SlimFit TX-S3082WH 30" 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

TV shut off will not stay on.

Sounds as though you have a video problem. It may be the convergence chips. The TV is shutting down do to a default in the circuit ( the set knows there is an error of somekind so it shuts down to protect itself). This is a problem that needs a pro trouble shooter since it could be in about any board. Sorry I couldn't help more
NC Electronic
Mills, Wyoming

Jan 07, 2008 | Mitsubishi VS-55707 TV

1 Answer

Green Screen

Your picture tube is bad,pull back off/ unplug crt broad on neck of tube make sure it does not touch anything ,turn set back on if set stays on tube is shorted!

Dec 18, 2007 | GE 13R100T 13" TV

2 Answers


Going back some time ago, I believe that in this model of set, if there is a power supply failure, the sleep timer will show as activated.

I suggest calling the JVC service rep to find out details for this. I believe the power supply will have to be changed. Also, the tech will check the set to find the cause and service it as necessary.

Jerry G.

Oct 31, 2007 | JVC AV-27D302 27" TV

1 Answer

Samsung TXE2546 25" TV Problem

Check for hot spots on circuit board = solder any/all bad connects + check for bad capacitors.......T

Oct 23, 2007 | Samsung TXE2546 25" TV

1 Answer

TV shuts off and red standby/timer lights blinks red until I power the set off. When it shuts down it does so with a very loud snap. When I turn it back on the screen is blue and has light blue...

The most common cause for what you are seeing is a shorted gun in the picture tube. When 2 elements (heater and cathode) of one of the guns inside the neck of the picture tube touch, that gun goes full on and overloads the flyback (high voltage) transformer. If it is in the blue gun, the screen will go bright blue with light blue "retrace" lines in it. The computer senses the overload and shuts the set off. At 2 years old the tech most likely tried removing the short by arcing between the elements. This works sometimes but the short often comes back a few months later. Another attempt at removing the short could be tried, and it might work this time, but it may or may not work for long. The ony other solution is to replace the picture tube but that would cost much more than the set is worth. A qualified tech will be able to tell you if this is the problem in your set.

Aug 21, 2007 | Sony KV-35S36 35" TV

1 Answer

TV Shuts off, Screen Problems

The problem could be the power supply, the flyback trasformer or simply a bad connection. A repair cost for this TV set could run any where from 75 bucks all the way up to 225 or so, depending on the problem. Good Luck

Apr 29, 2007 | Sony KV-32S40 32" TV

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