UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Trio 9R-59D receiver problems.

Station X · 26th Jan 2019, 6:42 pm

It's clearer in post #139. Still a long way to route an earth wire though.

These sets originally had a two core single insulated mains flex with the OFF/ON switch in one leg and the mains fuse in the other. I wouldn't argue against the provision of a three core mains flex, but wonder whether its provision has contributed to the mains hum problem?

I never regarded the level of mains hum from these sets as being excessive, but on the other hand I never used mine with headphones.

26th Jan 2019, 6:42 pm	#156
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Trio 9R-59D receiver problems. It's clearer in post #139. Still a long way to route an earth wire though. These sets originally had a two core single insulated mains flex with the OFF/ON switch in one leg and the mains fuse in the other. I wouldn't argue against the provision of a three core mains flex, but wonder whether its provision has contributed to the mains hum problem? I never regarded the level of mains hum from these sets as being excessive, but on the other hand I never used mine with headphones. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.