Question about Samsung HP-R5072 50 in. Plasma HDTV

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Turn tv on it goes on and off and is blerd after about 5 mins its fine

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Sounds like the power supply board is failing.

Posted on Nov 18, 2009

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Black vertical line


This seems to be a problem with some older panels. If you are prepared to tackle the problem yourself then try the following.
WARNING there are some very high voltages within the TV which can be LETHAL so the greatest of care should be taken.

With the back of the TV removed, use a hair dryer and apply warm air to all the ribbon cables in turn until you find the one which causes the fault to disappear. Now turn your attention to the faulty ribbon and remake the connections as necessary.

Dec 19, 2013 | Insignia Televison & Video

2 Answers

Vizio 42", have picture for about 5 mins then screen goes black.


also check the power cord wire coming from the back of the tv is loose from the tv side or perfect.

Oct 26, 2008 | Vizio Televison & Video

1 Answer

I can turn on the tv and it's fine for about 20 min then the screen goes black with sound. I turn it off for a minute and it's fine for another 20 min. Like it's overheating.


It might also be a bad solder connection, short of checking voltages what I have done in this type of situation is with back off use a small fairly high speed fan - a hair dryer set to cool works, to cool areas of the boards inside to localize which board is causing this, with the set in failure, got it? it goes out cool it with a handheld hair dryer with air set to cool, when you find the spot where the problem is it will either instantly come back or try to.

Do it a few times to confirm which board is bad and locate a replacement board and swap it out.

Dec 15, 2012 | Proscan 47LB45H 47 in. LCD TV

1 Answer

Picture goes black mins after watching


Bad flyback transformer. It has a short in the winding making the Horizontal output transistor heat up so when its too hot the set goes into protection.

Aug 25, 2009 | RCA D52W23 52" HDTV CRT TV

1 Answer

I have a RCA L32HD32D, will be on for 1 to 5 min. later goes off


check secondary power supply. check capacitors and apply fresh solder.

Jun 01, 2009 | RCA L32HD32D 32 in. LCD HDTV

1 Answer

Plasma tv picture goes on and off but always has sound


I install a fan in the back, there is a only o9ne 5 v, 3,3 a that you can connect workin fine..

Mar 24, 2009 | Gateway GTW-P42M303 42 in. Plasma...

1 Answer

Screen Goes Green TV goes to stand by blinking 8 times


try adjusting your color tuners located inside tv behind speakers.

Nov 25, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Sony tv


Check solder joints in horizontal deflection circuit.

Sep 07, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Audio ok, but Video goes from color to black.


the tv turns on fine, but after 5 - 30 min or so, "sometimes MORE " the picture all of a sudden go's black. Sound is ok it is 100% loose contact problem. 1 please check for any connector or print for loose. 2 in signal processor ic there might be loose. remember there is no component failure.

Sep 24, 2007 | JVC AV-32D305 32" TV

1 Answer

Flickers on cold startup after 5 min then goes away in 2-3 min.


I had same problem. Tech's said the power was noisy. I cleaned up the power but the TV still did exactly as you describe. Problem will progressively get worse with longer bouts of flickering. I was under warrenty and sent the TV back. After 3 months I am still waiting for a repalcement.

Jan 12, 2007 | Westinghouse LTV-27w6 27 in. LCD HDTV

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