Here's the amplifier end of the Mandello's chassis. I've already removed the ELL80, its valveholder, the two output transformers and a variety of other small components, all of which were completely knackered. A lot of the printed circuit board is carbonised, with peeling tracks, especially on the underside (yes, it's a double-sided board). I've added a couple of components to adapt the existing circuit to the new amplifier  (they're the light gray, clean-looking ones!) and I've fitted solder pins to appropriate points on the board to allow the new amplifier to be connected up. Basically, we're ready to go, except that we haven't yet built the new amplifier.