Author Topic: Yamaha K-1020 cassette deck  (Read 140 times)

Offline MacGeek

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Yamaha K-1020 cassette deck
« on: September 08, 2020, 12:16:30 PM »
I have a malfunctioning Yammy K-1020 cassette deck.  When in record mode, the deck seems to not fully erase previously recorded material.  In playback of both factory recorded and home recorded tapes, the signal fades and is inconsistent (the meters reflect the inconsistency, as well as the audio output).

I have had this deck for over 20 years and am the second owner.  I love this machine and it is mechanically and cosmetically in great shape.  When properly working, it makes and plays tapes very well.

Does anyone have any ideas as to what is causing the problem I am experiencing?
Mac stuff, Sony HDR-F1HD AM/FM/HD tuner, Yamaha K-1020 cassette, Denon CDR-W1500 CD recorder, Music Hall MMF-9 w/B&O MMC2, Tandberg 10X

Offline Sir Thrift-a-Lot

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Re: Yamaha K-1020 cassette deck
« Reply #1 on: September 08, 2020, 11:42:35 PM »
Since it is affecting both playback and record perhaps something in the biasing circuit?   Is it two or three head?

Offline Jim Pittsburgh

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Re: Yamaha K-1020 cassette deck
« Reply #2 on: September 09, 2020, 08:32:48 AM »
Have you checked the alignment of the heads? what about condition of them?
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Offline MacGeek

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Re: Yamaha K-1020 cassette deck
« Reply #3 on: September 09, 2020, 08:43:33 AM »
Heads are pristine and the pinch rollers are spotless (3 head-dual capstan).  The belt was replaced a couple of years ago.

The speed hold constant; it's the audio that is inconsistent, fading in and out
Mac stuff, Sony HDR-F1HD AM/FM/HD tuner, Yamaha K-1020 cassette, Denon CDR-W1500 CD recorder, Music Hall MMF-9 w/B&O MMC2, Tandberg 10X

Offline gdv

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Re: Yamaha K-1020 cassette deck
« Reply #4 on: September 09, 2020, 11:51:24 AM »
Almost "sounds" like the dbx function is not working properly...

Have you engaged/disengaged the switch?  Check that first...  Maybe try to clean the switch...

Let us know...
George
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Offline MacGeek

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Re: Yamaha K-1020 cassette deck
« Reply #5 on: September 10, 2020, 02:40:26 AM »
Thanks, George.  I have never used the DBX function (never much cared for how it sounds).  How does it affect record and playback in the Dolby modes?
Mac stuff, Sony HDR-F1HD AM/FM/HD tuner, Yamaha K-1020 cassette, Denon CDR-W1500 CD recorder, Music Hall MMF-9 w/B&O MMC2, Tandberg 10X