Why dos our Samsung Model LE40m87BD after going away for about a week the TV switches itself off and beeps, then turns itself back on. this happens on a regular basis for about half an hour to one hour every time we leave it off for a few days?

SOURCE: my samsung dlp tv model hl-p5063 w cuts off multiple times while playing

Hi, I had the same problem on my Samsung.

I removed the rear cover and cleaned the cooling fans, there were (2), it has worked fine ever since.

Be careful of course working with electrical boards.

SOURCE: I have a a insignia lcd tv model ns-27lcd turns off by itself

The problem is most likely the fuse connected to the power wires. You have to take apart the TV and follow the power wire to the fuse. Fuse number is T4AL/ 250v. It will be labeled above the fuse. We had the same problem. Also, check to see if the metal around the tops and bottoms of fuse are loose.
The way we fixed it was to wrap aluminum foil around the fuse and put it back in. It is only a temporary fix until we can get a fuse. Hope this helps.

SOURCE: Sony KDL46XBR switches itself off randomly light blinks red twice

Your power board got zapped you will need to replace it.

SOURCE: Insignia NS-LCD32 - 32" 720p Flat-Panel LCD Turns itself off, resets, then turns back on

It's haunted. You must appease the spirits with a virgin sacrifice.

SOURCE: Sylvania LD320SSX turns off by itself.

your powersupply is dying in the set.. have it checked..