BLOW OUT Just recently my TV would work fine for 20 minutes then shut itself off. After a 15 minute "cool down" we can turn it back on of course the volume is at maximum i beleive the tv is resetting itself. Any clues?? Of course the warranty has lapsed.

There is a large sand filled resistor on the main board close to where the power cord attaches that cracks. This will stop power until it cools enough to make the connection then heats up rapidly to open it again. It may be worth the trouble if you're handy with a soldering gun and can get the back off the TV. If not then I'd consider getting a flat screen.

TX valve freezing?

a likely problem is a fuel pump going down...as it gets warm, it heats up the wiring inside and they expand causing a loss of connection inside the pump...As it cools, it comes back together and works again...when it dies out turn the key off and listen closely for the pump to hum when you turn the key on...If it doesn't wait for it to cool and then when you try again listen and if you hear it and it starts, that's your problem...fuel pumps will go bad quickly if you don't keep your tank at least a quarter to half full as the gas is what keeps it cool so it don't get too hot and melt the shellac on the wiring which will eventually short out...

my 46'' inch tv polaroid lcd has been working fine for 3 years. today my wife and I noticed the tv is shutting off the screen will go black and the power light does switch to red. you can here something inside the t.v clicking but you can turn it on and it will start back fine for 20 minutes then shut off again? Does anybody know whats going out on the tv? let me know

You likely have a restriction in the heater coolant hose circuit - perhaps a coolant control valve not fully opening, or a kinked hose.
Insufficient coolant volume is flowing to keep the heater core hot.
Try back flushing the heater core system with a garden hose to check flow.

Yes. It is definately something Heating and cooling.

It may simply be a loose connection, but it may be a failed component.

Service is required

or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

Might be overheating and might need a firmware update. I'm guessing overheating.

Hi James, replace the fan or If it's still under warranty have it serviced. Suggest you stop turning it on until the fan is replaced. It could be the fan cooling the CPU. You don't want it to fry.
The shut down process is normal when over heating is detected by the system.

lenovo link. http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-63446

Good luck!
Mike

IT IS YOUR POWER SOURCE HAD SAME PROBLEM CHANGED POWER PLUG HAS HOT TURNED OFF SINCE