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Old 12th Dec 2021, 11:12 pm   #65
Phantomrose1999
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Join Date: Mar 2008
Location: Melbourne, Victoria, Australia
Posts: 261
Default Re: Grundig TK27 - Low audio output

Just before work had to tinker, and i may have the best clue yet,

With the unit powered on, and NO buttons pressed, i touched the head wire and got the 50hz buzz, then i pushed the plate with the pinch roller towards the head, and spun the reels manually AND I GOT SOUND !!!

So it looks like the head is constantly connected to the amp, even without the play being pressed, and i know it should not do this.

So will have to trace the wiring to find out why this is happening. May be the root cause of the problem with the hiss..
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