DIYbanter - Toshiba 36" TV with flashing red light

(A man wrote this review at Amazon.com)The Toshiba TV, Model CV36V51,
because of the quality of the picture in the retail area. However
after about 18 months, the picture went blank. The sound was present
and menus items showed up as good as usual. I discovered that if the
the brightness was adjusted to maximum, I would get a temporary
picture as good as ever. After a time the picture would become hazy
and substantial darker for a period of time but would then revert back
to an excellent picture. The picture would operate in the temporary
status only when the menus items Color Temperature was adjusted to
COOL and the Picture Preference was in the (Memory) status. In
addition to the above, the set would become blank and the red on light
indicator would begin to flash and the remote and other functions
would not function.

I have the same story as the guy above, the front of the TV red light
blinks and if I whack the front of the TV the red would turn solid and
would get a picture. The whacking has stopped and I have no picture.
Is it the mother that is going bad? Because was reading about the Sony
Wega TV having these problem. The boards are bad. It's the A and C
boards. Is it time to get a new TV or is there something loose in the
back.......I have open up the back and see nothing loose the back.

Christian