Television and Home Theater

My Magnavox started showing Green and Blue Lines in between the Picture going white  and the Picture would narrow Horizontally for 3-5 minutes before adjusting to fit the Television Screen.  Now I have no Picture and the Screen is just Black.  The light comes on to let me know that it has Power.  The Model is a 9P6031C102 and the Chasis is a PTV835.   I believe this is a 60inch TV.  I bought it used and it's a rear Projection Television.

Trying to converge a Toshiba 
TP48C71  big screen projection TV. On the grid, RG are converged but blue is way out- like 2 inches, and the front control barely even moves it.

I pulled the main convergence board PB3366-1 and  I see nothing obviously wrong with it. I think the CONVER OUT board, PB3366-2 may be the problem though- its the one with the 2 big heat sinks.

twice in the last two days, the same problem has happened.  I have a Panasonic 42 inch plasma ( TH42PX50OU) purchased in June 2005.  I turn the TV on using the remote.  The red power light comes on, but there's no picture, no sound, nothing.  I try using the remote control to change inputs (cable, satellite, DVD), but I can do nothing.  I use the buttons on the TV to try and change channels, nothing.  I unplugged the TV, leaving it off for a minute.  When I plug it back in and turn it on, it works fine.