I have a 46 inc panasonic plasma tv. when i try to switch the tele on with the main button on the tv the light just turns red and it dont switch on. i have tried to diconect the power which use to work now it dont. can u help?

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

These blinks are fault indication, and known as blinking codes. From the number of blinks occur at one time switch ON; you can get an idea about the faulty circuit stage inside the TV. This will make repair easy. For more information, check the link http://electronicshelponline.blogspot.com/

checkpower suply allcapacitors are ok if any one opens on top replace it

The power supply board is dead.Tries the websites like Shopjimmy.com,Ebay.com to buy the refurbish power supply board for the replacement.

i have the same problem on my tv and i call to bestbuy since the tv is only 2months so still on the manufactures warranty the problem is SC Board shorted, and they replaced the sc board.

I would use the warranty at Bestbuy at that point. Opening up the TV would most likely void the warranty.

bad main call panasonic

Try to replace the Main Power Supply board first.

it could have over heated you can try to reset it first unplug it for about five minutes and try to turn it on if that dont work the remote might have a set button try holding that down until the red light flashes twice, then turn it on if not then hold the power button down on the set for a good five seconds to see if that resets it. if none of that works you will have to go to panasonic .com for the reset instructions.with the red light blinking the power supply is most likely good you just need to reset i.

I had the same problem with my new TH-50PX60B. I turned the tele on then after 5seconds it would switch off. The standby light would then blink on and off 11 times, pause for a second then flash 11 times. This would continue until the power wasturned off. Note the TV would not turn on for more than 5 seconds.
I solved this problem by turning the tele on and checking the fans at the back. My tele had 3 fans. If one of the fans is not turning, this will be the cause of the problem and the tele will shut down under the Emergency Shutdown System. To clear the fan try blowing on it to free up any dust etc. If that still doesn't work try using a thin instrument (tie wrap etc) to manually turn the fan and free it. Then power off the tele and turn it back on. The tv should work perfectly.