Question about RCA 36V430T 36" TV

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Turns off and on continuously

I've turned up the "screen" adjustment on the back so i could see when it turns on. Continously comes on then shuts down. No sound while on. doesn't seem to be getting enough power to stay on or deguass either

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  • boomerkentuc Oct 07, 2008

    My tv will turn on and then turn right back off. Some times it wont even stay on long enough to show a picture.

  • franciservin Oct 15, 2008

    This tv is in the repair shop for the third time. The first time was in July of 2007. The tv started turning itself off in March of 2007 and coming back on, by July, it would not come on at all. Now, the repair shop is telling me it cannot be fixed, something with the board having more cracks, whatever that means, somehow trying to put the blame on me!!!

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  • 4,234 Answers

The fact that there is no sound is an indication that the regulator circuit is faulty. This set should get a detailed repair estimate. This is not easily diagnosed remotely without takeing measurements internally. If you can get the estimate and post the results here, I should be able to walk you through the actual repair.

Dan

Posted on Aug 14, 2008

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Horizontal lines, they can go away for awhile if we move the TV, but they come back. Most annoying. Can't figure out if there is such a thing as a "horizontal hold" button on this thing, but I...


Hello

If your TV has nice thread like horizontal lines on the entire screen, at aboug 1 inch apart or so, it is due to the high screen voltage. In some sets, this voltage may go high due to a defect in screen control adjust preset, integrated to line output transformer [LOT].
You just open your tv and locate the screen adjust control. It can be seen on the above said LOT itself. There will be two adjustable controls, one for adjusting focus voltage, and the other for adjusting the screen voltage.
Dont touch the focus adjuster. The screen adjuster will be at the bottom of the focus control, and both of them have visual markings there stating 'Focus' and 'Screen'.
Just turn the screen adjust control a little, while looking the picture on the screen, and adjust it till the lines on your screen just disappears. Never turn more than this position. The turning must be counterclokwise, not clokwise, as this should shut of your TV.
Take every precautions when we works with an elelctrical equipment. As high as 25,000VDC points are there, while tv is working, you should be very cautious. Do this with confidence. Take care. OK.

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My Sony Trinitron 36'' model#: kv32v26 is taking a long time to show picture when turned on. The sound comes on and the red light blinks for about 3-5 min. before the picture turns on. And when i switch to...


Hi Matt.
I`ve been repairing sony tv`s for a long time now and i can tell you that what you described is sure signs of a weak picture tube.
And the price of a new picture tube makes it prohibitive to replace it. You could open the set and adjust the screen control on the high voltage transformer but it won`t last long. If you decide to do that , look for a transformer with a long and thick red wire that connects to the back of the picture tube , That is the flyback transformer and there will be two controls on it, you want to adjust the bottom control that is the screen control(the upper one is the focus).
Turn your tv on and slowly turn the screen control up until the picture shows up at a reasonable brightness level, if yout turn it to high or you may get retrace lines in the picture.
That may strech the life of your set for a couple of months .
Hope this will help. Merry Christmas

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There is a way to adjust this but it requires removal of the entire back cover-----YOU HAVE TO BE VERY CAREFUL WHEN YOU DO THIS AS THE SET HAS TO BE HOOKED UP AND TURNED ON!

IF the problem occurred over a period of time you have a good chance-----if it happened suddenly--you have a problem in the set.

With the back removed locate the HIGH VOLTAGE TRANSFORMER- it will have a large red wire coming out of the top of it that snaps into the top center of the picture tube (this is the anode lead) DO NOT GET ANYWHERE NEAR THAT LEAD WITH THE SET TURNED ON---ABOUT 25 THOUSAND VOLTS IS THERE

IF YOU LOCATE THE TRANSFORMER(ABOUT THE SIZE OF YOUR FIST) IT WILL HAVE TWO CONTROLS ON THE BACK---the upper one is Focus and the lower is SCREEN

With the set on turn the lower control (Screen) slowly to the right until the brightness comes UP---DO NOT TURN TOO FAR OR YOU WILL GET TRACE LINES AND THEN THE SET WILL SHUT OFF!

If adjusting the master screen does not solve the problem---you have a circuit problem and the set may or may not be worth fixing. Usually if the picture got darker over a long period of time--just adjusting the screen control up A LITTLE will restore things to normal.

I cannot tell you how important it is not to touch anything in the set---keep one hand in your pocket and use the master screen slowly.

Let me know what happens and if you have any questions ask before you attempt this.

Regards, SD TECH

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1 Answer

Turning on shuts off red light starts blinking


Hi

You have defective Oscillation Circuit maybe you have leak small parts like capacitors and resistors. and also the HOT Area.

Thanks!

Dec 04, 2008 | Televison & Video

1 Answer

BUSH LCD 17TV004 picture goes off!!!


if yo know how to solder , re solder your tv, second adjust the IF transformer by using the plastic or wood stick. IF transformer is looks like a cube made of metal with an adjustment screw at the top. try to adjust it and observe what happen.

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Volume control for model TXD1972


This may sound stupid but try this turn the volume knob to high and low continously for a few seconds sometimes the contacts become dirty and just a little movement back and forth quickly repairs it. I said SOMETIMES.

Sep 04, 2008 | Samsung TXD1972 19" TV

1 Answer

No picture


you may have turned down the screen control
It is the lower one on the flyback transformer
Just advance it enough to get the pix back. If you advance it too much it may get retrace lines in the pix or shut down.
turn very slowly.
Thanks Guy

May 10, 2008 | Sony FD Trinitron WEGA KV-27FS100 27" TV

4 Answers

Rca 27v414t shut off by it self after a feww seconds.


Most likely the TV is detecting an internal problem with it's circuitry and is shutting itself off to prevent further damage. You'll need to have a professional look at your set to determine exacly what's going on. Aside from leaving the power cord unplugged for five minutes, then pluggin back in and trying it again, there's nothing anyone can do from here. It may work, but it's a long shot.

Hope this helps, and please rate my advice, good OR bad.

Good luck!

Feb 04, 2008 | RCA 32V524T TV

3 Answers

Blue screen of death


What you Have Is a Main RCA Failure you Have a Cathode to Grid Short In your Picture Tube,The Tube shorts and Tells the Miainboard to shut Down...Good Luck

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1 Answer

I have sound but no opicture


When you replaced the flyback the new flyback is shipped with the screen and focus controls set at minimum. These are the 2 controls on the flyback itself. Turn the set on and let it warm up a minute, then slowly turn up the screen (bottom) control with a small flat-head screwdriver. When the picture is around normal brightness, adjust the focus (top) control until the picture is nice and sharp. Then, turn the brightness and contrast all the way down and set the screen control until you can just see the picture, just above the point where the picture vanishes. Reset the brightness and contrast settings and your picture will be back to perfect.

Jul 02, 2007 | RCA F36650 36" TV

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