[vosperd]

It was the same all the way up, my Cumbria Designs frequency counter worked fine in the end.
I will spend some time cleaning out the melted varnish and wax from the old set and consider getting a transformer made up at a later date. I see there is a transformer in Greece but the carriage cost is high and I've spent my pocket money now.
Faults have a habit of returning, at least I know a bit more about it now and another subscriber to the forum has kindly sent me the relevent chapter from the ARRL handbook regarding the synthesiser.
Cheers
Don m5aky