Question about Samsung PN50A450 50 in. Plasma HDTV

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Tv turns on and off

Have a samsung pn50a450p1d 50 plasma. Powers on then cycles and shuts down repeatedly.

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Anonymous

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SOURCE: Samsung 50" plasma won't turn on

My 42" plasma is making a clicking sound, then it switches off and keeps clicking but not switching back on, when it does go back on it stays on for just a few moments, it is only 14months old.

Posted on Dec 04, 2008

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Anonymous

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SOURCE: 50" Samsung Plasma with black screen

I had the same problem and had the TV serviced and found that the y board was blown $350 total. The repair guy explained that the board has a hot transister underneath that slowly leaked onto the board, but says that they can not get Samsung to admit to the problem. Works fine now but only have a 90 day warrenty on the parts.

Posted on Jul 01, 2009

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Anonymous

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SOURCE: my 50 inch samsung plasma tv turns off and on by

My Samsung 52" plasma TV will shut off while watching TV. It will do it repeatedly and we have to turn it back on. Is it overheating and shuts down? How can this be fixed?

Posted on Dec 19, 2009

SOURCE: My Samsung FPT5084 50 Inch Plasma TV....keeps

http://www.retrevo.com/support/Samsung-FP-T5084-TVs-manual/id/2839bh444/t/2/
http://www.samsung.com/us/support/detail/supportPrdDetail.do?menu=SP01&prd_ia_cd=02010200&prd_mdl_cd=&prd_mdl_name=FP-T5084
Below is the service manual link from epox. ftp://ftp.epox.com/downloads/Manual/mu-8KDA3J&+11.pdf

This is usually a switchmode power supply problem, and it's shutting down, for safety reasons, so as to avoid a fire and explosion or both. Realistically you need to get a "Quote" from an authorised service agent, for repair.

Posted on May 24, 2010

Anonymous

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SOURCE: error diffusion on Samsung 50" PLASMA TV

Yes the diffusion problem on your tv is due to the pdp panel aging. What you can try is readjusting the VSCAN voltage, there is a test point marked VSCAN using a DVM you can first check the voltage, should be around -- 190 turn the adjustment counter clockwise this should reduce the voltage, watcthing the picture turn control untill the sparkling pixels stop. That should do it. The panel is starting to age this may occur again until you can't adjust it out meaning a bad panel.

Posted on Nov 08, 2010

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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
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My TV can't turn on and getting clicking sounds...help please!!!


I have a Samsung Plasma PN50A450 and one night the TV turned off and the result of trying to turn it back on was simply the set trying to turn on, making a click sound and nothing happened. I pulled the back off, and attempted the capacitor fix that is well documented on the Samsung LCD TVs. I did have a swelled capacitor that I replaced and also replaced the other capacitors that were the same Microfarad rating, temp and voltage which were replaced in a popular UTube video. That did not solve my problem, so I went onto Ebay and bought an entirely new power board for 69.00 plus 14.99 shipping. Replacing the board took about 3 minutes. TV is now working fine and will go back up on the wall in a day or 2. Note, the power board in my TV was a BN44-00205A. That board is no longer in stock anywhere ( I believe because it has been determined to be a bad board) I replaced it with BN44-00207A. Which I suspect is the board that is being used for replacements of the bad BN44-00205A. It fixed My TV. Hope this helps you. BTW, Both power boards are listed for replacing a board in the PN50A450, but the BN44-00207A Specifically states its for a PN50A450P1D. I took a gamble that the BN4400207A would work. It did.

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1 Answer

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It seems that your unit has some sort of Thermal PSU fault, or a problem that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur. After it shuts down and the faulty component(s) cool down, it restarts again until it once again goes critical and shuts down again only to repeat the cyle.
You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.

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My 50 inch samsung plasma tv turns off and on by itself. it also clicks while this happens.


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