Picture flickers or strobes and screen goes black but I have sound, it's a Samsung 46

SOURCE: LN-T4665F 46 in. LCD- Black Line across screen

The set is under a year old and is under warranty. The LVDS cable inside these sets have a history of coming loose. The problem could be the panel. Either way, the set is the problem and needs to be looked at. This set is worked on in the home and does not need to be taken to a shop, so, you can still use it. Contact Samsung at: 1-800-SAMSUNG Hope this helps.

SOURCE: samsung le32r black screen

Hi.

Your problem sounds like inverter has failed.
To prove this you need to remove the back from your tv set.
Then switch it on and look carefully through the small holes on the metal shielding that is directly over back of screen you are looking for bright white light.
If you cant see it easily try doing again but in A dark room.
If you can see white light through the holes in metal shielding the inverter is working & fault is else where.
If no light can be seen problem is with inverter you will need to remove the inverter pcb & check the transformers with ohm meter to see if one is open circuit. Allso look on same pcb for any smd circuit protectors that may be open circuit.

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Chris..

SOURCE: 46" Samsung TV loses sound.

R U using HDMI? If so that be the problem.

SOURCE: Complete black screen on samsung 46 inches

Yes, you do need to get the LCD repair before the warranty expires. Call the manufacturers to find an authorized service center near you.
Good Luck.

SOURCE: Samsung Plasma TV - picture has 6 sections of horizontal lines

All I can say is when you watch T.V. the plasmas run off of plasma gas and when you leave something on for so long it burns in the screen. I have the same T.V. and when watching like the weather channel it leaves lines but they go away. If yours are permanent then you can't do anything, but it may help if you go on your remote and go to "menu" then look for "setup" and scroll down with the arrows on your remote. Look for "screen burn protection" and select "white screen". This will make your whole screen white and it may take out the lines. If you let it sit white it won't hurt it. All one color won't hurt, the only thing that hurts is like bright white lines in front of a dark background. Just give your T.V. a break from time to time ESPECIALLY ON VIDEO GAMES. T.V. shows that are HD usually have their channel icons that move or are very dim and they won't hurt. Just go to what I told you and let it sit about 20 minutes, if that doesn't help, then the T.V. you have i believe comes with a 2-year standard warranty and if it's under warranty take it back if you have the reciept. If no reciept then call 1-800-SAMSUNG.