Hello, danyexp!
You wrote on Sun, 21 Aug 2005 21:44:43 -0500:

d Have an early 70s 13" Sony TV. Now and then all of the red "flickers" in
d and out of the picture. Is it a possible bad picture tube or ?

d Thanks
d AJ

Yes that's possible, but it could be just a bad solder joint, the most
likely place to look is on the small circuit board on the CRT pins. check
the pins themselves and also the video drive transistors.
With best regards, 3T39. E-mail: