Question about Samsung 46 UN46C7100 3D TV
Happens intermittently. seems to go away when the tv is tapped lightly. any ideas what this could be and how difficult it is to fix?
Unfortunately this is a tab fault caused by the screen itself, only real solution is a new screen
Posted on May 12, 2014
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Posted on Jan 02, 2017
One thing you can try IF you know how to work with electronics.
Unplug and remove back cover. Remove the metal cover on the LCD Controller card. (it near the top of set) You may have to disconnect the top of the "H" frame to get to it. Disconnect and carefully re-connect the flat ribbon cable for the left side of the display. (The right side is good so don't touch it.) The connector for the flat ribbons will flip up to release the ribbon. The ribbon is short so this is tricky to do right. You may need a small plastic tool to help. Dont' break the connector. With the card back in place check if the band is still present. If vertical lines appear on the display, unplug and reposition the cable again until they are gone.
Don't touch the contacts on the connectors.
Re-assemble the set. No parts should be left over !!
LCD Controllers for this set are for sale on eBay if need.
Posted on Feb 17, 2009
I have a solution. My Samsung plasma had the same problem with the bottom half of the screen being black. Follow these directions and it will not cost you a dime, just some time. I took the back panel of the tv. I found the lower buffer board on the left hand side. I disconnect all the ribbon cables. Use an air cleaner to spray out any dust on the ribbon connection and the board. I connect the ribbons back to the board. My plasma is now as good as new. If you have issue with the top portion, do the same with the upper buffer board. I was going to buy a new tv but I'm glad I gave this a shot first. It's been almost a month and it's still working fine. Hope this helps and hope it saves you some money.
Posted on Nov 14, 2009
SOURCE: No Video on Samsung HPT5054
It's a pretty common problem. The no picture but sound problem is usually the y board. I've replaced 2 on mine now. The 680uf 35V capacitors usually are bulging because one of the power transistors went and took them out. This has happened to both of the y boards I had. One time the failing y board took out the buffer boards too, and once it did not. The fix is super simple and anyone with even the most rudimentary knowledge of computers or electronics can do the labor yourself. You should do the simple stuff first by just doing a quick test with a multimeter. Just check the power coming to the y board. After that you can just remove the y board by removing 3 cables and like 3 screws. Plug in the new board and it's done! You can source the parts from a place like shopjimmy or discount merchant. 3 boards were like 200 bucks. 1 board is like 100 bucks. Labor took me 15min. Think about that the next time an electronics repair place charges you 1000 dollars. Of course they check everything (Yeah right) and warranty their work (I don't) but if you check the service manual it states that this is the most common repair. Look for the Canadian manual online. Hope this helps!
Posted on Feb 23, 2010
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