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Old 2nd Dec 2021, 8:16 pm   #52
DMcMahon's Avatar
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,362
Default Re: Grundig TK27 - Low audio output

Very difficult, maybe a blast of hot air to some of the PCB components to see if that shortens the wait period to reach full volume, to try and isolate the problem to specific area.


Edit Update - Also suggest record the valve electrode voltages at the start and after the volume becomes good, to see if any major differences which may then point to the components around a particular valve.

Last edited by DMcMahon; 2nd Dec 2021 at 8:26 pm. Reason: Updaqte
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