UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Vintage Radio and Phonograph cutter schematic

ms660 · 9th Nov 2019, 8:09 pm

Just looking back at Post#41, only slight hum was reported, I would check everything done since then and also determine whether the hum is 50Hz (mains, heaters etc) or 100Hz (HT ripple)

Lawrence.

9th Nov 2019, 8:09 pm	#60
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Vintage Radio and Phonograph cutter schematic Just looking back at Post#41, only slight hum was reported, I would check everything done since then and also determine whether the hum is 50Hz (mains, heaters etc) or 100Hz (HT ripple) Lawrence.