Model is the LG LDC 47" -problem, tv has to be turned on & off for about 20 minutes before it stays on. Like it has to warm up? TV is a year old & has just started to do this. Once on it works fine. What would cause this delay in turning on TV?

453Watts http://electronicshelponline.blogspot.com/

capacitors in the switch mode power supply

yes you have to replace the mainboard just buy the part yourself and install it there's not much to it buy the part @ www.shopjimmy.com

Hi, That sounds like an issue with the board in the tv, can't say I've seen it happen with that model yet but I have with last years models. If it's too late to return it to the store where you bought it I'd suggest seeing if they'd exchange it for you if not talk to LG.

you can get cheap replacement boards for this tv via ebay,...........good luck,...
cheers

You have some dried out capacitors on the power supply. Samsung has a major issue with this right now and I made a tutorial for that repair in my Tips & Tricks. Your capacitors will not be the same, but identifying them and replacing them will be. Best advise I can give you: Stop using the TV and unplug it until you get it fixed. When these caps go bad, they draw down the voltage they are filtering. I've seen some TVs that had secondary damage because of this. I hope this was of some assistance, best wishes.

Your Power Board is going bad. I think this set has a one year warranty on parts.

Hey, its always better to give your model number from the back of the tv to get more relevant answer. However, it appears that you have a DLP TV and its TV Lamp has gone bad. For Sacramento area check on www.fixurtvs.com for more answers and repair cost estimates. The bulb gets worn out in 2 to three years and at times operates intermitted for few minutes to some hours. So if you have a DLP TV and its more than 2 years old, change the Lamp. Its easy and most people can do it as described in the owner's manual.

Go to a repair centre, some parts must be fixed/replaced.