Re: Grampian 506
Hi Techman
Yes very unusual
I haven't known any radio equipment containing a mains transformer having neutral connected to chassis
AC DC with a mains dropper, yes, but not a mains transformer
Just wondering if there's any way I could isolate the chassis
The other Grampians I have are a 641 Tuner amp and a 642 Amp all isolated
Wish I could get hold of a circuit diagram for the 506
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