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Old 28th May 2021, 6:23 pm   #39
dazzlevision
Dekatron
 
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 3,596
Default Re: Murphy V659/759 restoration

The sound interference limiter is a Q1/5 metal rectifier - also made by STC. It may show o/c in the forward direction, if tested on the diode test range of a DMM.

Whilst I remember, if there is a metal clip around the middle of the U193 valve, remove it - an official mod from Murphy (requested by the valve manufacturer) - it can cause the valve to fail.

Last edited by dazzlevision; 28th May 2021 at 6:28 pm.
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