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

jubilado · 7th Jul 2019, 6:05 pm

Thanks again for various replies - sorry to be such a nuisance!
Paul - I bought my original 621 from Elena Mae in Edinburgh and after a short while blew the output transistors After that repair it was fine for the 10 or 12 years I had it. I really liked the sound with the AR7 speakers I had. (replaced by a midi system because that had fewer cables) When a friend of mine first heard the Armstrong he liked he sound and started to save for one. After the transistors blew he changed his mind and bought a Rotel!

Alan - Checking voltages at resistor 232 - one side 24 volts - other side 63 volts! - varying down to 53v or so as the distortion point is reached. That doesn't appear to be right!!

7th Jul 2019, 6:05 pm	#37
jubilado Triode Join Date: Jun 2019 Location: Edinburgh, Scotland, UK. Posts: 30	Re: Armstrong 626 problem at high volume. Thanks again for various replies - sorry to be such a nuisance! Paul - I bought my original 621 from Elena Mae in Edinburgh and after a short while blew the output transistors After that repair it was fine for the 10 or 12 years I had it. I really liked the sound with the AR7 speakers I had. (replaced by a midi system because that had fewer cables) When a friend of mine first heard the Armstrong he liked he sound and started to save for one. After the transistors blew he changed his mind and bought a Rotel! Alan - Checking voltages at resistor 232 - one side 24 volts - other side 63 volts! - varying down to 53v or so as the distortion point is reached. That doesn't appear to be right!!