Plasma TV wont turn on after its been off for a few hours

Hello

I am a student, so like everyone we dont have money to buy a new tv and if there is an sollution for this problem we always want the cheapest one.

Well, i came up with one. At the back of the tv there are several air vents, so what happens, is that the heating coil of the tv does not heat up enough to start the tv. What you must do is take a hair dryer and set it to the heating option. Blow the tv at the back throug al the vents for about 30 to 60 seconds and try to put it on. I promise you this will work!
Please rate this sollution.

Best regards