UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Output transformer. PYE P32QTG gramophone

Simon Gittins · 4th Jul 2021, 6:52 pm

No, C25 (later version manufacturer's reference number) is the fixed audio correction capacitor that output pentodes need. In many sets, it's connected across the output transformer primary where failure just causes silence but in this case failure would stress the transformer.

The audio coupling capacitor is C22 0.01uF 350V DC. As this is a short superhet radiogram, there isn't the usual significant anode voltage on the other side of it but I would suggest changing both these capacitors anyway to reduce the risk to your new transformer.

4th Jul 2021, 6:52 pm	#5
Simon Gittins Heptode Join Date: Jan 2006 Location: Cornwall, UK. Posts: 506	Re: Output transformer. PYE P32QTG gramophone No, C25 (later version manufacturer's reference number) is the fixed audio correction capacitor that output pentodes need. In many sets, it's connected across the output transformer primary where failure just causes silence but in this case failure would stress the transformer. The audio coupling capacitor is C22 0.01uF 350V DC. As this is a short superhet radiogram, there isn't the usual significant anode voltage on the other side of it but I would suggest changing both these capacitors anyway to reduce the risk to your new transformer.