Question about Samsung Touch of Color PN50C550G1FXZA 50 in. Television

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My Samsung PN50C550G1FXZA plasma tv won't power up.

The red LED stand by light is continuously on and there is no clicking sound when I try to power up.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Samsung TV won't turn on- trying to fix it. A challenging problem

I had the same problem. I live in NJ and called the local authorized "service provide" listed on the Samsung website. What a joke. Quoted $350 just to show up, never showed up. So I opened my own TV. Took off the plastic back (10 screws) took off the large metal RF shield (12-14 screws) and noticed a blown component. The markings on the component were KL15L and it is apparently an NTC Thermistor. Obviously it got fried and not knowing if there was other damage I decided to set out to replace the entire Power PCB Board Assembly and not the component. There were two part numbers on the assembled board (BN97-00457E & BN94-00622E). After searching online I also found a suitable replacement number for these (BN96-04896A). I found two places who claimed to have the part or have it on order (shopjimmy.com and vancebaldwin.com). After placing orders with both and having neither come through, I broadened my search and found out that the LNR409D was basically the same model as my LNR408D so I looked for its Power PCB Board Assembly part number which turned out to be BN41-00521B. Google search for that part number showed the item available on ebay. I bought it a week ago (ebay 260311519904) for $144 plus $12 shipping. I removed the bad board an hour ago (6 screws about 7 connectors) installed the new one, plugged in the connectors, replaced the covers, plugged in the TV... AND IT WORKS!
Suggestion: If your TV is out of warranty then open it up (what have you got to lose) and see if the problem is obvious and maybe something you can fix (replace) yourself. The parts, spare boards, etc. are out there if you look.

Posted on Nov 16, 2008

  • 7 Answers

SOURCE: Samsung LNR408DX/XAA Wont power up

I had the same problem with a 52" Samsung LCD. I found 2 electrolytic caps with bulging tops on the power supply board. (see pic). I looked to be the 5v section but I'm not sure. I got replacement at Fry's for $1.90 each. All is well!
Ahwatukee Al

ff0cf58.jpg

Posted on Jul 21, 2009

  • 1 Answer

SOURCE: Samsung LN-T4032H

This is the capicator $1.50. You have to take off the back, sauter off the capicator (you'll see it because it is poking out) and sauter on the new one. I found the fix on this web-site.

Posted on Oct 04, 2009

lightnbaby
  • 36 Answers

SOURCE: tv tries to come on but just clicks and clicks.

There are 3 capacitors in power supply board, all 1000uF10v.
2 for 5vdc and 1 for 12vdc. replace with best quality 1000uF 25V cap.
do it yourself repair will save you $300

Posted on Nov 16, 2009

  • 28 Answers

SOURCE: My tv won't turn on, the red light just blinks and

power suppy needs replacing...according to samsung and other forums i read when mine did this its a common problem

Posted on Mar 20, 2010

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The red LED merely indicates that power is getting to your TV. There may have been a power supply failure, especially since your TV is a 2008 model

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Here's is what you need to look for when describing a problem for troubleshooting purposes:

0) What model is the TV (you've covered that)

1) Does the TV respond to command to turn on?
(yes - continue; no - 70% bad power, 30% bad main board)

2) Once it responds (clicks), does a front LED or other indication show that it turns on? It's OK if there's no display.

(that can be model specific and is not certain indication for anything until known what is specific for the model)

3) If such an indication comes up does it remain on until you act or does it go off by itself?
(Stays on - power supply likely good; turns off - power supply *may* be good, but not certain)

4) If the power indication stays on by itself can you make it go off by pressing the power button or do you have to disconnect from AC power?
(responds to power off - 90% power supply likely OK and 90% OK main board; does not respond to power off - 90% bad main board)

Here is a link for test/repair of the power supply of your TV, hope it would help:

http://www.coppelltvrepair.com/p/895/samsung-pn58a550s1fxza-power-supply-repair-service-for-dead-or-clicking-on-and-off-problem

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Sounds like a Zenith or LG TV. It is most probably the Y board, when you hear the clicking sound is usually that. I am sharing this with you because it happened to me with a Zenith (POS). The red light (on my TV) is in the bottom right corner. In my case it was the Y Board. Best of luck

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try to test the relay,, or maybe the capcitor, diodes in power source section with your multi tester,, and i think, there is a thermostat beside power that leaks or defective maybe,, then try to change it..

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The main power supply regulator board has the fault. Check if any electrolytic capcitor/s has bursted out. Replace them if any. If this do not help you. repalce the board as card basis.
Replacing it as card basis is fine, rather than making 'surgery' to it.

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I have a 42" Samsung


This clacking and clicking noise could have been coming from a capacitor going bad in the tv. If this is the case where the tv will not turn back on, I would suggest calling samsung to try to get a replacement or get the tv serviced. Trying to replace bad capacitors can be a tedious job and requires knowledge of soldering small components. This may also void your warranty if you still have coverage.

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