Television worked fine before botched firmware update. I just wanted to update to newer firmware because television is 4 years old and new features wih newer firmware. Thanks
A unsuccessful update can be the cause. Try to update once more with exact soft: version. If it to do not help; replace the main board. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Firmware (Software) update procedure of many popular brand TVs and other devices are given in detail. Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
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.
SOURCE: A 1 year old Samsung LNT4669 Television. It
This is a common failure. There are tons of resources for DIY repairs to correct this. I have a tutorial in my Tips & Tricks to fix this. Have a look if you like, best wishes.
SOURCE: Television will not turn on; it's plugged in, the
I would have to say that you have bad capacitor in the power supply.Have you taken the TV apart?If you can take it apart,and send some pictures of the board with the power cord going to it,I can tell you which capacitors if any are bad.They have a rounded top to them instead of being flat.Also,how many blinks does the power light blink?Usually it's a series of flashes,and then it repeats.I hope this helps.Thank You very much!
Tyler
SOURCE: Short circuit on the "Y" sustain board
The problem is heat!!! If the tv has fans they should be checked for normal operation,although on the early samsung models there were none, and the problem is that the panel drive buffers are getting to hot due to inadequate cooling. This is most apperent when tv is mounted to close to the wall, also external fan blowing on the rear left side will dissapate the heat. It is a problem on early Samsung and Electrograph 42 " plasma models. Hope this helps.
SOURCE: Why won't my Samsung UN40D5005BF come on?
Lightning damage can do a # on LCD TV's. I've seen cases where it took out power supplies and main boards at the same time. I'm not one who likes to use the "shot gun" approach. You would need to get the set professionally diagnosed in my opinion. Where did you get the main board from?? Are you sure it is a working board?
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Thank you the knight for your answer. I tried the usb update trick but did not work i cant get to menu screen tv does not get that far. I ordered the main board from tvpartsguy.com. I will post when im done how it went. This is my first time doing this kind of repair newbie lol. I watched several youtube videos. I already took. Board out. I also tried shopjimmy.com but they were out of stock and 20 bucks more. I paid $29 plus $10 shipping. Thanks all for you help this stinks samsung should fix this issue. They should have a factory reset option which restores a bad firmware update. The only way to send a message is to boycott them lol. Love my tv its great i have a led un32eh5000f awesome also. Anyway cheers.
Followup i received the main board today and installed it. Pretty easy straight forwad. I took picture before hand just in case for wire orientation. Made sure i was grounded properly etc. the whole process took 20 min and it was a success the tv works great and has the newer firmware version which is a plus because i was not going to attempt another update lol. Thanks all for your help.
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