1991 Sony Trinitron TV trouble.?

Question

After 15 min. all the channels over 50 lose the cable signal and all you see is snow. You have to go below 50 for 30 min. for it to get a signal above 50 again.

Answer 1

Replace the UHF tuner module if it is a separate unit, otherwise replace the tuner.  You can find the part no. on the tuner itself.  See the following website to purchase one.   http://www.ptscorp.com/.

Answer 2

Buy a new TV