47 Inch LG HD TV -switches itself off and remain off for days

is it a 47 inch LCD Television if so it weighs about 54 pounds with stand.
http://www.usa.philips.com/c-p/47PFL7704D_F7/119cm-47-inch-class-full-hd-1080p-digital-tv/specifications

Hello...This tv sold for about $535 retail back in 2008...It was considered a great set with good consumer reviews...but you must consider that the set is 4 years old and depreciated in value...also HD tvs...much like computers have become better and more affordable...Myself...I wouldn't pay over $200 or less because I'm sure there is no warranty and if I pay over $200 for a 32 inch tv.....It will be new....If the seller won't sell for under $200...shop around....I would start at $150.00....I hope this was helpful...let me know what happens....PEACE.......PS...b4 you make an offer...see how much the seller is asking......Cool!!!

Sounds like you had a high voltage power surge just before going out
Are u using a high grade reference center or surge stage 2 or 3?

this is from the LG website about that TV.
- Rear,
2 x Composite video/audio input (RCA phono x 3) - Side,
2 x S-Video input (4 pin mini-DIN),
1 x USB (4 pin USB Type A),
1 x Audio line-out (RCA phono x 2),
2 x Component video input (RCA phono x 3),
2 x Audio line-in (RCA phono x 2),
1 x Digital audio output (optical) (TOSLINK),
1 x Digital audio output (coaxial) (RCA phono),
3 x HDMI input (19 pin HDMI Type A),
1 x RGB input (15 pin HD D-Sub (HD-15)),
1 x Audio line-in (Mini-phone stereo 3.5 mm),
1 x Serial (9 pin D-Sub),
1 x Remote control (Mini-phone 3.5 mm)

again return this unit where you purchase and tell the support about the problem for their reports to the company.

We had the same problem of pathetic sound quality and volume with a sony brava. Thats just the way they make tv's these days because most people buy a surround sound system as well. We bought logitec computer surround sound speakers for about $140 and plugged into the ear jack, problem solved, we have heaps of volume and stacks of bass.