UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Yamaha CA-400

EF80TVVALVE · 22nd Nov 2022, 11:22 am

Thanks for the link, I'll keep that handy as it's a real problem with some 70s amplifiers. There are a few more 2SA763 transistors used although they're okay. The other thing to note is a lack of mains earth with the amplifier, I find that having a 2 core mains lead and separate earth terminals to the rear is quite outdated for an amplifier made in 1975. For safety purposes I'll fit a new 3 core lead and earth the chassis.

22nd Nov 2022, 11:22 am	#4
EF80TVVALVE Octode Join Date: Feb 2010 Location: Leicester, UK. Posts: 1,433	Re: Yamaha CA-400 Thanks for the link, I'll keep that handy as it's a real problem with some 70s amplifiers. There are a few more 2SA763 transistors used although they're okay. The other thing to note is a lack of mains earth with the amplifier, I find that having a 2 core mains lead and separate earth terminals to the rear is quite outdated for an amplifier made in 1975. For safety purposes I'll fit a new 3 core lead and earth the chassis.