Question about Samsung PN50B450 50 in. Plasma TV

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My problems with samsung pn50b450 is it clicking on the power board and will not power on.The capitors all look good.but i changed them any way.I still did not work so i ordered another board and it is still doing the same thing..What could the problem be?

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SOURCE: Samsung PN50B450 50 Inch On-Off Problem

POWER SUPPLY BOARD HAS FAILED. CALL1-800-SAMSUNG FOR NEAREST SERVICE CENTER.

Posted on Dec 09, 2009

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SOURCE: I have the same issue with the Samsung power

Because of the power supply problem, it sometimes causes the main board to become defective, replace it.

Posted on Jun 01, 2010

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1 Answer

Stay always black and I heard a blink noise over coils on PCB


The capacitors have failed. Don't put power on it! Replace the swelled Capacitors with the same Value and Voltage and Size. Those bad capitors will cause a myiaid of problems.

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Have a Samsung 50" Plasma, PN50B450. When power is on, red light clicks, nothing happens. I replaced the main power board thinking it was the issue, not so much... Any thoughts????


After replacing a power supply regulator board to any plasma displays, you have to adjust the Va & Vs voltages according to panel specifications. You haven't here specified whether you've done it or not. If not, you have to do it. If you're sound in electronics, and wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Flip card, can be selected by the drop-down list, by the top left of the display window, will make surf easy. You can also do a search, by type in the brand name / model number / IC used, in the search box at the top right of the display window.

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Samsung PN50B450 plasma tv model # pn50b4450b1d


That problem is usually cause of faulty y sustain board..It is looks like OK but the system was faulty..Try to replace it to fix the issue..

Jun 14, 2012 | Samsung PN50B450 50 in. Plasma TV

1 Answer

When turning on screen flashes confetti then goes blank again....PN50c4501b1d


Suspect the main board in the set that processes all information.

Google the model number with "parts" which ought to lead you to shopjimmy.com who has by model number a list of all boards in most of these sets that are used with part number and costs.

Jun 11, 2012 | Samsung PN50B450 50 in. Plasma TV

2 Answers

Will not turn on red led blinks and clicking sound red led stays on. Have taken back off and see no swolen capasitors


I don't have a solution but my Samsung 50" 720P Plasma is doing the same thing. It's already been in the shop for a new panel and now just after the warrenty runs out this happens. I'm NOT recomending this TV to anyone. NO MORE SAMSUNG for me...

Dec 13, 2010 | Samsung PN50B450 50 in. Plasma TV

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My Samsung LCD TV (40A450) 40 inch, when switch turn on after 2-5 second it turn off, no red light. when i remote to switch on then the red light is on and then press on again the lcd tv on after 2-5...


The capitors on the back might be bad this I have fixed on these tv's many times. That could be one of the problems and the capitors are on the power board inside the tv. If you do not know how to work on electronics I would have a pro do it they contain hight voltage so be careful if you try to fix it yourself.thanks

Oct 06, 2010 | Samsung LA40A450 40 in. LCD TV

1 Answer

Samsung PN50B450 50 Inch On-Off Problem


POWER SUPPLY BOARD HAS FAILED. CALL1-800-SAMSUNG FOR NEAREST SERVICE CENTER.

Dec 09, 2009 | Samsung PN50B450 50 in. Plasma TV

1 Answer

How do i tell if capictors are swollen, what is dm board


the top of the capacitor will be rounder then the others
(the metallic part on top)

good luck!

Jun 24, 2009 | Mitsubishi WS-65315 65" Rear Projection...

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