Hi I need a little help for Toshiba 50H72. Only half screen is working and the other half is off. The TV had this problem for a while and sometimes the picture would come back and work normally and just today only half the screen is working with no change. Since the TV is not at my house and I didn't get a chance to look at it but I'd like to hear your opinion before I dig it in. I suspect it could be a problem with vertical output such as bad caps or bad joints. What do you think and please point me to the right directions?