Supposed to have only a minor problem for repair but there is obviously
(also) a totally black shapeless lump , presumably remnants of a burnt out
capacitor. Marked C17 between F1 and F2 low power rail AC fuses. Anyone know
its value? probably about 1nF, too low a voltage rating? or because it lies
over a power rail track between D17 and C7, coating burnt off. Loads of
these mustard yellow globular Cs around the board

The output relays seem to present a short to the speakers in powered off
mode, have not got to the solder side of the board yet to explore.
RoHS construction, of course may present other nasties when I get there, not
originally forseen.