i have a pioneer pdp-506 pg plasma screen tv. one day it just turned off on its own. it'll turn on for a second then cut right back off. it's 2 yrs old. i took it to a repair shop and paid the $75 diagnostic fee. after a month, they called back saying the repair would cost $589, but they need a $250 deposit before they can work on it. they also said of the $250 deposit a $150 of it would be nonrefundable cause if the boards they put on do not make the tv work it would cover the stock charge. they said 9 times out of 10 this would work. when i asked what was wrong with it, they said the plasma driver went out. does anyone have any experience with this or am i getting ripped off? please help