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

Restoration73 · 17th Jan 2019, 10:21 am

I keep an old set where the AF117 mixer oscillator is socketed,as this is quite a demanding test for functionality of germanium devices. Most unusual fault was an AF117 which was able to function as oscillator, but not mixer in a HMV set - replacing the device cured it.

17th Jan 2019, 10:21 am	#11
Restoration73 Nonode Join Date: Jun 2013 Location: Surbiton, SW London, UK. Posts: 2,801	Re: Testing an AF117 transistor I keep an old set where the AF117 mixer oscillator is socketed,as this is quite a demanding test for functionality of germanium devices. Most unusual fault was an AF117 which was able to function as oscillator, but not mixer in a HMV set - replacing the device cured it.