Tetsujin

Whereabouts are you? Mine failed a few years ago & I found a guy in North London willing to have a look. He's not a musical specialist, but he'd done a great job a year before on a beautiful plasma TV I had, which had flummoxed the rest of the interwebz, so I asked him if he'd be willing to have a look at the Dynacord. He hung onto it for a while, but I got it back good as new - he said it had suffered a cascade fail down a line of capacitors/rectifiers [which I only barely understood] but the entire amp is discreet component, so everything is replaceable.