Thanks all for your suggestions.

I did eventually contacted Steve, braved covid and took the F80 to him. Took me months!

Once with Steve, fuse replaced, soak tested, now OK and being enjoyed for the terrific radio it is. All in a day. What took me so long?

Anyway, thanks Steve.

Great job done.

Many thanks,
William

William
808.6,HD621, Oppo 103EU, DSP5200SEs, DSW.2; 218, DSP3200s, Oppo 105D, Panasonic PVR, Panasonic plasma; F80