to start with, some possibilities...
1. Is TV and hifi on the same AC line? If so, plug TV into a different AC outlet/breaker to prevent ground loop.
2. Is the speaker too close to the TT or does it not have enough isolation? Vibration from speaker can go thru the furniture, then cartridge and tonearm.
3. Are u using a grounding wire from the TT?
1. Is TV and hifi on the same AC line? If so, plug TV into a different AC outlet/breaker to prevent ground loop.
2. Is the speaker too close to the TT or does it not have enough isolation? Vibration from speaker can go thru the furniture, then cartridge and tonearm.
3. Are u using a grounding wire from the TT?