On 11/03/2011 12:15, Robin wrote:
Do you have a friendly local tip* and/or an active local Freecycle group
from which you might source an old stereo amp?

*sorry - I suppose I ought to refer you to your specialist weee
recycling facility

They're remarkably 'fussy' at our local tip -
they really don't like you fossicking about in their
'pre-loved electronics' bin.....

I think I'll go another way - found a couple of heavy-duty
toggle switches on CPC - use one for power and the other
(dpdt-centre-off) to replace the 'volume up' and 'volume down' switches
on the pcb...

The toggle switches are way over-specced, but the unit will be thrown
into the back of a van & things may drop on it - so a bit of
over-engineering isn't a bad plan!

Adrian