In article ,
Jim GM4DHJ ... wrote:


That sounds like a wiring problem. A mate of mine had a similar
problem in the 70's with a 60's car, that turned out to be a failed
on/off switch on the radio (this had no lights to indicate it was on,
and didn't make a sound tuned between stations). IIRC it was drawing
an amp or so.

valves ?...

You'd have heard the vibrator...

--
*Growing old is inevitable, growing up is optional

Dave Plowman London SW
To e-mail, change noise into sound.