I went to turn our tv on and got no response, as though there was no power. I checked the power supply at the TV end of pead and there is a supply. There were no problems prior to this.

TV Parts Universal TV Stands DLP Chips ShopJimmy for parts. Check the power supply for the presence of the different voltages. Electrolytic capacitors will swell and dome the tops of the metal can. If you don't have the voltages on the power supply board, replace it.

Hi Rhonda,
This a sad surprise which happens to many tv owners. The power supply section in your set has gone bad. Please consult someone who can handle your set. Good luck.

Try the power button on the tv. Your remote may have dead batteries. If no luck still, it sounds like your power supply unit has gone south. Check for warranty before attempting to repair.

The timer light blinks representing the fault on the tv. If the tv blinks in an orderly fashion then the number of blinks before pausing is used to indicate the fault. This can only be determined by looking at the service manual for that set. If the blinking is continuous without pauses after a number of blinks, then it indicates there is a problem and the first place to look would be in the power supply. Either the power supply isnt supplying power to the Line output transformer i.e an open circuit or short circuit..OR the line output circuit has a short. Without a diagram i cannot guide you which components to check..but..swollen topped capacitors in the power supply are a give away :)

Hi

as you said.. you have defective horizontal output transistor! and or the power section, please check the power regulator first. this is repairable..

Thanks!

The issue has been resolved. I removed the back of the TV (pretty easy actually) by laying a blanket over the kitchen table and placing the TV face down. I started with the power supply as an obvious beginning. Both fuses on the board tested fine. And touched up every solder joint with a hot soldering iron in case the problem was a cold solder joint. After this painstaking venture, I performed another visual inspection and noticed a capacitor that had a thin black X on the top of the can. This is a common sign the capacitor has over heated. I located a replacement for $1.20, installed, and successfully powered up the TV. I have had no problems since.
Oh, yeah, I also paid $120 for a BN44-00150A replacement power supply, plus overnight shipping. It actually arrived three weeks later. That was two weeks and six days after I fixed the power supply myself.
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My 32" hyundai LCD TV will not turn on. The power lead is ok the on / off switch on the side turns the red stand by light on and off. I am unable to get the LCD TV off stand by. I have tried the the stand by button and this does not do anything. Can anybody help.

The most common problem with TV was the failure of the Horizontal Output Transistor, this will also damage 2 transistors in the power supply and a resistor in the power supply also. (From memory): Horizontal Output location # Q501, 2 power supply transistors Locations Q601, Q602, and resistor Location R607. Also solder the Horizontal drive transformer, you can find it by following the circuit board from the base of the Horizontal output. Some models used an IC instead of the 2 transistors in the powersupply, it will have six legs and check like 2 transistors. Good Luck.

video card went out in the tv. You are saying you need a schematic. Be real careful getting into tvs. They have very large capacitating capacitators in them that can electrocute you. You need to take it to a repair specialist and have them run a check on it. Sounds like the video card to me though.