UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Copicat MK2

Michael Why · 23rd Mar 2019, 10:58 pm

Hi all

So full strip down and clean , pots, switches and sockets all changed. I am getting a good strong echo now and all seems to be working ok apart from one problem.

There is still a lot of noise. I would not call it a hum it’s more a random but frequent static. I have noticed if I touch the metal front panel with something metal I get a crackle which is picked up by the record head and played back. Does this sound like a bad earth somewhere or as this was never designed for a 3 wire supply has this introduced an earth loop. I have tried disconnecting the earth wire and still the same

23rd Mar 2019, 10:58 pm	#38
Michael Why Retired Dormant Member Join Date: Nov 2017 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 18	Re: Copicat MK2 - No Echo Hi all So full strip down and clean , pots, switches and sockets all changed. I am getting a good strong echo now and all seems to be working ok apart from one problem. There is still a lot of noise. I would not call it a hum it’s more a random but frequent static. I have noticed if I touch the metal front panel with something metal I get a crackle which is picked up by the record head and played back. Does this sound like a bad earth somewhere or as this was never designed for a 3 wire supply has this introduced an earth loop. I have tried disconnecting the earth wire and still the same