SOURCE: VCR/DVD & Samsung TV: "weak or no signal"
Take the VCR remote, check VCR output settings ( scart1, scart2 , RCA) and signal format (PAL) etc
SOURCE: No Picture - Samsung LN-S4692D 46in HDTV LCD
I had the same problem and I replaced the t-con board. My t.v. is fixed!!!! I just couldn't see spending another 700.00 dollars for a repair shop to fix it. The t-con board is located at the top of the t.v. once you remove the back cover. Be very careful removing the two plugs at the top of the board which was easy once I figured out how the clips worked. there is a black lever like connection which flips up, then grip with your fingers the tab and slide the tape like wires straight out. The bottom plug is very simple. Also to expose the t-con board you will have to remove a heat shield cover. Once removed there is foil looking tape that needs to be peeled back to expose the board. The board is very sensitive to static electricity so if you have a grounding strap that you can strap to your wrist and ground to the frame while performing your repair. Its best to lay the t.v. face down on the kitchen table with a blanket to protect the screen. Good luck!
SOURCE: Samsung Flat Screen Won't turn On
Replacing the fuse worked for a few days, and then the fuse went out again. I did this 2 times already. The TV repair shop says it might be the "degaussing unit." He may charge me $175 to fix it.
In this bad economy, it may be worth it to fix it than to buy a $1000+ TV.
SOURCE: Intermitten remote sensor issue
Evidently 2 good remotes point at the problem being the remote sensor on the TV itself. I have about 4 remotes I can adjust volume w/ including the remote that came w/ my samsung. The TV exhibits the same behavior w/ all of them.
Per the samsung site, the "test" for this (remote vs sensor) is to us a digital camera, (including the kind that's on most cell phones) to "see" if the remote lights up. Just point it at the camera/phone, and press any button. You should see a bright flashing light on the camera/phone's LCD screen. If not, REJOICE! All you need to replace is the remote or batteries in it. If you do see the light, good luck if you're not in warranty. I've been unable to find any procedures for replacing this kind of item.
SOURCE: Samsung tx-p2734 TV Issues: Wavy lines on SIDE of tube...
For the buzzing noise try tipping tv jently forward and jently placing back.
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