Don't know if this has happened to anyone else. Last night my daughter switched on the plasma and a loud bang was heard and will not now turn on. I sspoke to our local Pioneer approved engineer and he says, from the syptoms I supplied, that it sounds like the power unit has gone. Last one he had cost £500 to fix. The screen is just 16 months old and of course, is just out of warrenty. Where I work in the city we have these running 24\7 for years and no problems.