i need help for my tv i tried to change the flash c/y ic but still doesnt work what will i do,, 2nd my cassette radio has only one channel is working what will i do

I have been working on a KV-32S42, possibly a similar model. The problem with ours was that video would flash on and then black screen, then video again at a rate of about 2 per second. Found the the Y/C jungle chip was flaky. When using freeze mist on the chip, the flashing rate would increase; when heating with heat gun, the flashing rate would decrease, and when I got it hot enough, the picture would be okay until it cooled down again.

I have the same model and the same thing happened today, December 8th, any idea what it is??