My Armstrong 521 Stereo Amplifier Circa 1968-1972

Here is a quick look around my newly acquired Armstrong 521 1960’s Stereo Amplifier.

[@harveysvintageaudio]

Decided to re rivit the speaker connector with J B Weld on the broken side and a washer just bigger than the rivet for support

[@mikekarpaty3871]

Cheers for the video Harvey. Never seen inside one of these before,lots of caps😮

[@harveysvintageaudio]

No worries Mike, yep there certainly are, lol.

[@raceingdemon6464]

Great Little Amp Harvey Make Sure You Take Out The Plug in Boards And Clean Any Tarnished Edge Connectors Also Check The Power Board For Any Blown Speaker Protection Fuses The Al102 Transistors Are Very Expensive To Replace But I Think You Can Get Russian Replacements ....mike

[@raceingdemon6464]

Think You Can Use Cheap 2N3055 instead Harvey

[@harveysvintageaudio]

I'm checking it all out atm Mike, changed one fuse on the PSU board and it blew again so possible transistor.

[@supaspy]

🎶 💃🏻 🕺 🎉

[@Theoobovril]

Sounds to me like the output transistor may have gone down. If so, you may have to replace both of them with a matched pair, Harvey.

[@harveysvintageaudio]

Think I need a few AC139's Theo.