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ms660 · 13th Nov 2018, 3:29 pm

According to the schematic the receiver has provision for external audio input via the PU sockets, switch S1 selects between Radio function and PU function.

I would connect the chassis to mains Earth if it's not already connected.

Lawrence.

13th Nov 2018, 3:29 pm	#2
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Murphy A128 According to the schematic the receiver has provision for external audio input via the PU sockets, switch S1 selects between Radio function and PU function. I would connect the chassis to mains Earth if it's not already connected. Lawrence.