Our sansui tv has a sound problem. It's like a

The short answer would be yes. A more detailed answer can follow if you can update this with the model number. If you are getting just a hum without any other sound, the problem may be a poor connection inside the set. It is possible that the audio amplifier IC has failed as well. You can narrow this down a bit by connecting the audio output form the back of the set to a receiver. If the sound from that is OK, then the problem is likely to be the audio amp. This Ic generally costs around $20 or so.

Dan