Question about RCA 27F634T TV

2 Answers

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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  • JP D'juarez Nov 20, 2007

    I can see some white lines in the background and we have cable tv conected to it. Thank you

  • JP D'juarez Nov 21, 2007

    I think I tried everything, the same cable on a different set worked just fine I noticed something real weird on this set while I turned it on and then I hold any of the tact switches on the front of the set it stays on as long as I kept holding any button and I can watch any channel.What could it be? I checked the tact switches and all measured ok. Thank you

  • JP D'juarez Nov 21, 2007

    Set fixed, I found R529 open on crt circuit board, after replacing it set is working again.

  • Anonymous Jun 19, 2008

    se apaga despues de unos segundos y el boton rojo parpadea

  • getbird Aug 12, 2008

    My RCA 27" (27F634T)has a greenish tint with lines through it when I turn it on and then after about 30 seconds it shuts off. Red power light blinking when power is turned on too.Any help will be greatly appreciated...

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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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Ts it in video mode?

Posted on Nov 20, 2007

  • Eugene Merritt Nov 20, 2007

    Is the screen clear and snowless with
    no hint of a picture or lines? Is anything
    connected to the TV Dish network,DvD
    player etc Blue screen without snow or
    picture usually is a video input without
    a signal applied

  • Eugene Merritt Nov 20, 2007

    If you are in cable mode then you
    have a cable problem
    if in antenna mode there is no
    antenna connected try hooling
    another tv to the cable if in cable
    mode and see if you get the same
    results

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REPLACED POWER BOARD TV TURNS ON DISPLAYS PHILIPS AND SHUTS OFF ,BUT LIGHT BLUE INDICATOR LIGHT STAYS ON


If no signal (whatever the reason) most sets with a solid blue screen will shortly shut off.

A few things to try first:

Unplug set, a box if used, a receiver if you have it in line---wait a while and plug each back and wait to see if they reboot and restore signal.

Also look to see if you can get the set to a video input before it shuts off---A DVD etc should be connected and on when you try that.

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Mitsubishi WS-65908 will not stay on


Its a color convergence problem from description:

If green light comes on for a few seconds and goes off:

On the front of the set (not the remote) press and hold both the menu and input (device) buttons at the same time for at least 5 seconds and release both.

Watch power light: it will blink a two digit error code, in your case I suspect it will be 2 blinks, 2 blinks and repeat several times.

Let me know error code and I will help.

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Sony Bravia TV


If you get a blue screen at turn on and a short time later it shuts off--power supply is ok--set is shutting down as no signal detected to protect the screen.

If using a box first unplug it and wait and plug back--let box try to reboot itself.

Also as a test hook a DVD etc to a rear set of audio/video inputs and go to that input quickly when the set comes on (have DVD connected and on---see if set works that way.

No signal either a problem with the set or the signal source (box?).

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My KP-51WS500 rear projection is showing these


This was one of several Sony models that had bad picture tubes--the set uses a red, green, and blue tube.

There is something easy you can try that may help you get some more life from the set.

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Here is what you need to do.

1.) You need to remove the entire plastic piece below the front of the screen. You most likely will find 3 screws on either side in back that you have to remove.

2.) The grill will not come out easy, pull from one side and then when it starts to come loose from the other side(there are several plastic pegs that hold it in.) Then from the bottom pull out( most of these sets have square plastic tabs at the top that tuck in.)

3.) With the grill removed locate the inspection plate behind it (it usually has 6 screws.) You will have to tilt the grill to the left and on its side as several cables are connected to it--they are held in place with trash bag like ties that you can release to get some room.

4.) With the inspection plate removed you will see a fairly small (about 3 inch square) BLACK PLASTIC BLOCK WITH SIX CONTROLS-usually they are marked with whiteout so someone can tell if they have been adjusted.

5.) You need to look very close at the block with a flashlight----usually the top three controls are FOCUS--don't touch those.
The lower three are usually marked Screen and if you look very close you will see b, g, r(blue green red)

6.)Usually the GREEN will be in the middle.

7.) Once you locate the BLUE screen control have the set on and turn it down--if the set is shutting down you may have only a few seconds to try to turn it down---usually to the left with the Screen control.

8.) Best way to do this if the set is on is on a video input clip_image001.gif with nothing connected--you turn the Blue screen down until the set stays on and then very slowly turn it up until you see a slightly Blue screen with or without diagonal trace lines----turn it down slowly until the Blue screen and trace lines just disappear.

Let me know if you get it to work--Like I said if it is shutting down you may have to slowly turn the screen down a few times to get it to stay on.

If it works you may only be buying some time--if the blue tube caused this it may return at some point.

If all this information has helped you rate this solution as I do this here for free.

Regards, SD TECH

Dec 20, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Full Color fading to blue then screen turns off. Repairable?


Here is what you need to do.

1.) You need to remove the entire plastic piece below the front of the screen. You most likely will find 3 screws on either side in back that you have to remove.

2.) The grill will not come out easy, pull from one side and then when it starts to come loose from the other side(there are several plastic pegs that hold it in.) Then from the bottom pull out( most of these sets have square plastic tabs at the top that tuck in.)

3.) With the grill removed locate the inspection plate behind it (it usually has 6 screws.) You will have to tilt the grill to the left and on its side as several cables are connected to it--they are held in place with trash bag like ties that you can release to get some room.

4.) With the inspection plate removed you will see a fairly small (about 3 inch square) BLACK PLASTIC BLOCK WITH SIX CONTROLS-usually they are marked with whiteout so someone can tell if they have been adjusted.

5.) You need to look very close at the block with a flashlight----usually the top three controls are FOCUS--don't touch those.
The lower three are usually marked Screen and if you look very close you will see b, g, r(blue green red)

6.)Usually the blue will be on the bottom left--it does vary

7.) Once you locate the BLUE screen control have the set on and turn it down--if the set is shutting down you may have only a few seconds to try to turn it down---usually to the left with the Blue Screen control.

8.) Best way to do this if the set is on is on a video input with nothing connected--you turn the blue down until the set stays on and then very slowly turn it up until you see a slightly blue screen with or without diagonal trace lines----if you get it to turn on this way turn the blue screen back down slowly until the blue screen and trace lines just disappear.

Let me know if you get it to work--Like I said if it is shutting down you may have to slowly turn the blue screen down a few times to get it to stay on.

I do this here for free and if this helps you at all give me a vote here--it costs you nothing.

Regards, SD TECH

Sep 17, 2009 | Sony KP-65WS500 65" Rear Projection...

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 )

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1 Answer

Hp flat panel monitor comes on shows logon and then blank screen


Ok, another words, monitor powers up for few seconds and shuts down by itself. If green LED on the front panel turns off as well or stays on?
If stays on, then inverter turns into protection mode because of old backlight lamps.
If it turns off in same time with an image on the screen, then there are some bad electrolytic capacitors in the power supply.

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1 Answer

TV screen Flashes blue and then shuts off.


When it flashes blue, are the flashes bright blue lines going across the screen with the picture in the background, if so, It sounds like the Blue tube or blue driver circuit is breaking down after a short period of time. If this is the case, the uPC that controls the set is detecting a large current drain on and is shutting the set off for protection, An engineers expert eye is required I`m afraid. Ian.

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1 Answer

Hitachi 46510 blue screen-Shuts down


Good Day, 6slimshandy9;

Try and look this;

Shuts down at turn on, LEDs D955 & D956 come on & turn off asap, the rest of the LEDs on power supply will go off slowly.
Cause: Found QEA6 (2315381) and QEA7(2315391) shorted in Blue CRT PWB.

I hope this was helpful, big IRISH. Or try unplugging the blue crt socket and if it turns off. If it stays on suspect bad CRT.

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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!

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