Have lcd tv samsung. Had a power surge now tv will turn on but no picture or sound. What could be the problem?.

If this is truly an LCD TV, the problem is in the power supply. You may have a red standby light on, it may go off when power is turned on. You will need to replace three capacitors. If this TV is an LED set, repairing will be difficult, opt for a new purchase. Thanks for asking Matt of Martins TV.

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Hi there
I would go to menu on the remote , from there to picture go down the list, if you do not find anything there to help you. Go to Support and to the E manual .
Kolbrun

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.

Power surge will knock out picture and sound if you don't have a power strip. Found out from Best Buys when purchasing another LCD TV. They have a warrenty against such problems.

Ur LCD inverter board it dead,must replaced to get picture back.It usally a long board.

open it up / there should be a glass fuse replace it/ull find it were the mains lead goes on the board/also try new lead just incase

Tv has power but no picture on the screen

I was told that these clicking noises (which happen on my Magnavox LCD too) were due to the "power required" at the internal switch. Seems that the power required to immediately turn on the TV is too much for a standalone household outlet, so it "surges" power in a series to get enough there. Hence, the clicking sounds are actually mini power surges to send more power to the internal circuits to turn the TV on.

If your set is like mine, these noises generally stop after a minute or two, correct?

You should always have all expensive electronics on a surge protector. It sounds like for this set the power regulators blown out as I know this set very well and seen it a hundred times!! its a power regulator IC that cant handle a power surge at all. and if thats your only problem, it shouldnt cost more then 175.00 to 250.00 to repair. Now with a surge though there could be other problems as well but from what you stated Im guessing alls ok except what i stated. Now Please do not attempt to repair yoursels, as these sets have alot of Hi voltage inside them even when they are unplugged.. Good Luck