Wow, I am quite honored, out of everyone on the forum you replied, Thanks.
OK,I may not have been completely clear regarding my setup in my pervious post.
I do have my Antenna connected into my VCR and from VCR to TV.
I do have my TV Audio out to my receiver, and I was using my receiver to hear audio while watching TV.
I was using my TV and receiver to play VHS tapes.
And the problem still persists , after about 15 min the screen goes blank.
Maybe there is something wrong with my TV, I’m going to take it to the repair shop and have them take a look at it.
Again, Thanks very much for replying.