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May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ...I Have A Sanyo TV I Can Hear But Black Screen Im 14 And Dont Know What To Do ! .... power button the power light goes from red to green, the screen flashes on then goes black ....Troubleshooting LCD Backlight Failure Samsung LNT-4066 ...
I believe that model has a logic board in it and that is what it sounds like to me. That is just off top of my head, but I believe if you will notice the standby light it will be blinking so many blinks and stop and then blink again. If so this is a code that you can look up on the Samsung web site and plug in your model and it should tell you what just say ~ 4 blinks means. I worked on so many and it has been a while but I believe the last one I had was a Samsung and I put a logic board in it. If I can be of any further assistance please let me know.
I have the same problem. At first the tv would just blink occassionaly and the sound would cut out just like yours. We realized if we turned the tv off then back on, it would be fine. Well, that's not working anymore, and as opposed to a blink, the tv picture is cutting off all together, can't imagine it will do anything but get worse. I called Samsung about another problem I had with the tv, the autofit screen size selectioon was great, however over time, on some channels there got to be a progressivley larger white line at the top of the screen. At first we could adjust the picture up to completely close the line. Now it is too large to cover up. Samsung said, "that's normal."....progressively worse performance?
Power supply board is dead.That the board,the power a/c cord go into it.Replaced the power supply board will solved ur tv power lite LED light indicator blinking and ur tv power will be stable and work again.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.