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Old 2nd Nov 2021, 6:24 pm   #3
DMcMahon
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Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 5,166
Default Re: Grundig TK27 - Low audio output

Voltage measurements (DVM) for comparison on my TK 27L were :-

Main HT +261V (Playback), +268V (Record) with 100Hz (10mS) ripple 4.5V p-p

HT on other side of filter resistor R17 (2.7K) = +236V, 40mV ripple.

Main HT with EL95 removed +282V

Main HT with no valves fitted +294V

David
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