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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 2nd Sep 2019, 2:27 pm   #1
hifigeek
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Join Date: Apr 2016
Location: Clonlara, Co Clare, Ireland
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Default Grundig TK 20 Volume

Hi Everyone, just need some help with my Grundig TK 20. Everything seems to work fine until I go to adjust the volume and then I get this rumbling sound from the speaker and after a while the volume reduced. Any help would be welcomed. Thanks.
Richard
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Old 3rd Sep 2019, 9:31 pm   #2
Horris
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Default Re: Grundig TK 20 Volume

From memory the TK20 was full of brown Wima capacitors. If it is change them all. They are notorious for going leaky.

Dave
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Old 5th Sep 2019, 6:10 am   #3
radiotechnician
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Default Re: Grundig TK 20 Volume

What is the machine doing, when you attempt to change the volume ?

Is it playing a tape? If so, below the rumbling, can you still hear the tape ?
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Steve Dow
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Old 18th Sep 2019, 3:58 pm   #4
hifigeek
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Default Re: Grundig TK 20 Volume

Hi Steve, Sorry for being so late with this but just saw you’re reply now.
In answer to you’re question the machine plays fine until you go to adjust the volume then it produces this bass rumbling sound until you stop adjusting.
Any ideas ?
Richard.
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