In message , Tim Lamb
writes
In message , raden
writes

Sounds like the classic PCB lockout problem, but without any useful
information, difficult to say any more

Is the fault poor soldering/cracked tracks i.e. repairable or
something too obscure to spot.

Although you do get cracked solder joints, there are other problems too

Oh that it was that simple

Umm.. I take it suitable exchange units are available ex-Watford?

Normally, yes, but demand outstrips repair rate from time to time

--
geoff