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I know this is from a few months ago.... but I just had the exact same thing happen to my Samsung UN70NU6900F. After doing some research and taking the back off I've come to believe it's the cable ribbon! I've managed to get my picture to come back on multiple times, so I'm gonna order a new ribbon and hope that's the case ??
If you get the menu the tcon is working and its the main..You won't be able to troubleshoot the main and even if you found the bad part changing it would be almost impossible in most cases, replace the board, try shopjimmy.com, that is where I get my parts, do NOT buy on eBay...to many people that know nothing about TVs selling boards that aren't tested, nothing worse than getting a replacement board and it doesn't fix the set.
Hi Jim, Some years back I received a 46" Samsung LED TV with the same problem. The main board was faulty in that case. Power on 5V line was short to ground and I had to replace The main board. I hope it helps. Good luck.
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Check all the flat cables runs between main board and T'Con for and damage or loose contact at both ends. If all are found OK, check the set with any external input; like CD player or VCR. If you do not get any image on screen with these inputs too, its T'Con board is faulty. If you do get images with external inputs, and not with RF or Cable inputs, the Tuner section circuit and the AGC alignments should be checked. In most cases, a main board replacement might need a firmware update too.
Contact any service technician. 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/
hi there, the game port probably has some corrosion or one or the pins is damaged. The way to fix this is to buy a new port and resolder it onto the main board. The only problem is that it requires some fine soldering and I ruined a couple of mainboards the first time I did it. It is one of the more difficult replacements unfortunately. You can get ports from ebay etc. If you know anyone who can fine solder then maybe give them the parts and they could do it...
This is a disassembly guide.
http://www.xcm.cc/how_to_disassemble_the_nds_lite.htm
Replacing parts of SyncMater 740N 17" is not difficult. Acctually you wanted parts is IP board the inverter is included to this assembly. If you want to buy this, get the code no. ex.
BN44-00130A
You can go to any Samsung dealer and ask them for that.It is most probable that they may not give it to you so go to a local shop and buy a multimeter and satrt checking the parts of the driver board. Replace the part that's faulty with a new one of same rating.
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