Thread: National SW-54 Thoughts
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  #12  
Old 04-08-2020, 03:52 PM
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jr_tech jr_tech is offline
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Try between pin 3 and 4 of the 50C5, those are the heater pins.

jr
Last edited by jr_tech; 04-08-2020 at 04:01 PM. Reason: typo
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