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Old 12th Jul 2019, 8:26 pm   #42
Nuvistor
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Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 6,962
Default Re: Hacker GP42 and AL42 restoration help

If you still have voltages that are a long way out after replacements are fitted. You could measure the cathode voltages of the pentodes, they are 1.4v and 4v at present. Swop the valves over, if the low voltages follow the valve then itís a sign that the valves are low emission.
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