hi all, i have an old philips crt tv 29PT6361 that has developed a problem where by the picture fades away to just a black screen after about 15-20 minutes of viewing. there is still sound but no pic. it gradually comes back again for a few seconds reulting in a picture with contrast overload. then fades out again, it continues to do this over and over again. also none of the av inputs work any more.
can anyone help thanks.