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Samsung pn42c450b1d will not power on... clicks.. used to click like 5 times now clicks 2 times and goes into standby. ordered a y sustain from shop jimmy and it did not fix the issue. power board is

Replaced y main board with one from shop jimmy.com... they told me to contact you all since there tech support was down...

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At first review of your problem the first thought occurred to me is that it may be a bad main/power supply...not familiar with new tv's but wondered if it was a simple as replacing a wire or something. You have said you replaced the main board. At first I didn't think that was necessary but apparently it's a fairly common course of action. That seems like a lot for a faulty power switch...but there's more to it than I realized. I found this excellent youtube video with some expert instructions on how to resolve, hosted by shopjimmy.com; you have referred to this source & I'd suggest it's about the best that's out there to find solution to your situation...seems something isn't switching over right & the tv clicks several times then goes into standby...thereby have to replace the faulty ??? I'd say capacitor but now adays the composite of the boards are alot different. This video link is the best solution. I hope it helps https://www.youtube.com/watch?v=n54IurMvr6o

Posted on Nov 25, 2014

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SOURCE: Planar PDP42BK Plasma TV

It is the power supply. Replace the C97, C19, and C16 Capacitors with 2.2 uF ones.

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SOURCE: Akai plasma tv 5 blinking red lights PDP4298ED

Have you guys checked out my solution in the troubleshooting and support for this same Akai model?

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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.

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SOURCE: replace main board on LG 42LC7D-UB

not sure what you're referring to as a "main board", but heres the LCD Control Board for the TV

http://cgi.ebay.com/LG-42LC7D-UB-LCD-CONTROL-BOARD-6870C-0119A_W0QQitemZ150277759127QQcmdZViewItem

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a1electronic
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SOURCE: power supply is bad on philips plasma 50 inch tv, it just clicks

nice job... thats the most common problem with all LCD tv's now

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