UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Bush DAC90A hum

Colin Boggis · 6th Dec 2021, 11:37 am

Co-ax should be fine in place of single screened cable. The suggestion of pickup in or near the volume control is a very good point. I've had that myself and a new control cured it.
You could perhaps disconnect the mains wiring from the switch and connect it remotely? With care of course. If this solves it then it confirms leakage within the pot or just very poor screening between the track & switch.

6th Dec 2021, 11:37 am	#49
Colin Boggis Pentode Join Date: Jun 2008 Location: Christchurch, Dorset, UK. Posts: 237	Re: Bush DAC90A hum - AGAIN! Co-ax should be fine in place of single screened cable. The suggestion of pickup in or near the volume control is a very good point. I've had that myself and a new control cured it. You could perhaps disconnect the mains wiring from the switch and connect it remotely? With care of course. If this solves it then it confirms leakage within the pot or just very poor screening between the track & switch.