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Old 4th Dec 2017, 1:35 am   #42
Boater Sam
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Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
Default Re: Murphy A188C repair.

The pins have to pass 1.1A, the fact that after resoldering you have continuity means the valve heater is there. I suspect that due to the poor contact with the socket pins, the socket connectors in the holder have got hot in use and are corroded or weak in the spring department. Pick up the 4 volts off the underside of the socket or transformer on 2 crocclip leads direct onto pins 1 and 8 of the valve. It should light, now you can test the voltage on the actual pins if it doesn't.
Its too valuable a valve to give up on too easily, same with the 6P25.

Last edited by Boater Sam; 4th Dec 2017 at 1:36 am. Reason: added
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