Attempting first project - Some questions if I may

[albanks]

Originally Posted by old_coot88

Could it be described more as a "hum" than a buzz? Since it remains the same irrespective of vol control setting, it would be 'downstream' (in the signal chain) from the vol control. Shorted output tube maybe(?). See if tapping the tube has any effect on it.

It sounds exactly like this noise coming from an unrelated video I just watched:
https://youtu.be/CmEyYAjjsn0?t=429

Very loud, disturbing buzzing. Last time the set was on 2 years ago there was no buzzing like this.

I think the RF Modulator has something to do with this but I am apprehensive to order a new one and then be out the money if it doesn't help. I was hopeful when I read I should unplug one audio cable as the set is likely monaural but that didn't help. The buzz is coming in right through the video cable. Picture is perfect and enjoyable.

I will open it soon and try to tinker but I am at a loss. I appreciate anyone who can help me overcome this.

Thanks!