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Old 7th Jan 2021, 3:15 pm   #5
Radio Tech
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Join Date: Dec 2012
Location: Bocking, near Braintree, Essex, UK.
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Default Re: Murphy A674. EL84 output valve capacitor.

Hi Rob,

Usually the ceramic caps of those sort of value do not give rise for concern and yes like you are advised about cathode resistors. Also look for those waxie caps that couple one stage to another these have a tendency to leak, a set of this age may want the electrolytic caps changed as well.

Best wishes

Ken
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