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

cooperman · 6th Feb 2023, 5:21 pm

The circuit diagram for the amplifier can be found here:-
https://www.audiomisc.co.uk/Armstrong/600/600faq.html

I think the transistors that have failed are the ones shown as items 623 and 624 - 2N5320 and 2N5322. You may have better luck trying to find those transistors rather than the RCA ones. The 2N ones are in a round can - unlike the flat package your existing transistors have.

6th Feb 2023, 5:21 pm	#3
cooperman Pentode Join Date: Feb 2018 Location: Cheshire, UK. Posts: 121	Re: Help Needed - Armstrong 626 Tuner Amplifier The circuit diagram for the amplifier can be found here:- https://www.audiomisc.co.uk/Armstrong/600/600faq.html I think the transistors that have failed are the ones shown as items 623 and 624 - 2N5320 and 2N5322. You may have better luck trying to find those transistors rather than the RCA ones. The 2N ones are in a round can - unlike the flat package your existing transistors have.