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ukcol · 12th Feb 2017, 4:48 pm

Hi Clive

Although I sympathise with the school of "if it ain't broke don't fix it", I would change the so called "that" capacitor.

It is C61 in the manufacturer's manual and is a 0.005uf (5000pF) @ 500 volts working. It is listed as a type TCC543. I am not familiar with the type TCC543 but I suspect it is a paper dielectric type.

If you leave it in place you run the risk of damage to the output valve and worst, the output transformer.

If you haven't got a manual its the only capacitor connected to pin 9 of the EABC80.

12th Feb 2017, 4:48 pm	#2
ukcol Rest in Peace Join Date: May 2003 Location: Harlaxton, Lincolnshire, UK. Posts: 3,944	Re: Ferranti 255, what a nice radio! Hi Clive Although I sympathise with the school of "if it ain't broke don't fix it", I would change the so called "that" capacitor. It is C61 in the manufacturer's manual and is a 0.005uf (5000pF) @ 500 volts working. It is listed as a type TCC543. I am not familiar with the type TCC543 but I suspect it is a paper dielectric type. If you leave it in place you run the risk of damage to the output valve and worst, the output transformer. If you haven't got a manual its the only capacitor connected to pin 9 of the EABC80.