Question about Audio Players & Recorders

2 Answers

Yamaha k-720 cassette deck

Will not work/play tape

Posted by govango on

  • 1 more comment 
  • Anonymous Jan 27, 2008

    tried 20 tapes ALL keep reversing and will not play any.
    But will fast forward and reverse. has not been played for some time. In great condition, in cabinet with other components and all others work. I bought it Oct 1985. Has always had great care, and worked perfectly. Now will not play ANY tapes!!! PLEASE!!

  • Anonymous Oct 17, 2008

    Same Problem...I noticed that what appears to be the capstan motor is hot, and seems to be powered even when the unit is idle (turned on, but no fuctions selected)

  • nonbiz_paul Nov 20, 2008

    yep. I have the exact same problem. Have not used the deck in years. But, boy, it is a killer deck, especially for recording.



2 Answers


  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

No play but fast forward and reverse work ok--yes it is the drive belt. I disassembled the unit to find that the belt is actually sticky and stuck to both weighted flywheels, the drive motor pulley and managed to stick to itself. The drive motor is warm from trying to turn. Now, anyone know where to find the belt??

Posted on Jun 04, 2010

  • dfsiegel Jul 26, 2011

    I read that you disassembled your K-720. I need to do the same to get to the belts. Any tips on how to remove the cassette mechanism would be appreciated.



Bruce Showalter

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 133 Answers

This unit may have a tape tension sensor. If that sensor isn't working properly, the mechanism always thinks the tape has reached the end during play/record. Sitting unused could allow some grease on the sensor mechanism to harden which would disable it.

The sensor probably isn't used during FF/REW.

Posted on Mar 21, 2008


Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:


Stop Paying .. ????

if the take up side gets stuck it could feed excess tape and stop the mechanism. Look to see if both reels are turning when you push play. Remove cassette door for a better view if possible.

Make sure your tapes have NO slack in them. Fast forward and rewind one cassette all the way, then try again looking to see if both sides are turning. If not, you may have a belt that is old, stretched and slipping or it's split apart or just fallen off

How do I dub using the onyx double cassette deck?

There should be a button or switch that will select the recording deck and the dubbing deck. You put a blank tape into the recording deck and the pre-recorded one into the play deck. Pressing the record button on the dubbing deck, on some models should start the play deck running. If not press play on that deck.

How to tape from one deck to another?

Press the Dubbing A to B button. Put your blank tape in deck B. Press REC/PAUSE on deck B. Press Play on deck A

Difference between a Yamaha KX 580 and a KX 580 SE cassette deck

Managed to find this blurb...
"The KX - 580SE is a refined model of the popular KX - 580, three time winner of ''What Hi Fi? Best Cassette Deck Award''. The KX - 580SE is a special edition which is UK specified. This cassette deck features CD to tape synchronized record start, timer record / play, new audiophile components in both the dolby and audio output stages, two - motor stable transport, Dolby HX pro dynamic bias servo, auto tape tuning and improved power supply."

Technics M14 cassette deck has hum. Bought used and had hum but I got it to go away by switching the tape select dial to metal,etc. but hum came back later. I'm thinking ground or a wire to that switch. ...

If the hum is audible without monitoring a tape playback it has nothing to do with the oxide formulation or any aspect of the media.

Determine the conditions present whenever the hum is present:

Player just turned ON?
Tape deck Playing or Paused?
Tape deck Recording or Paused?
"Tape" selected at the receiver?
Any source selected?

What switch are you referring to? You could have a floating ground or shield through a Tape Monitor or other control. Audio cables between the Deck and the receiver could be faulty or require reseating with a twisting motiuon to remove oxide build-up.

Hum can enter any unshielded cable running near any motor, magnetic field or some light sources. Sometimes simply reversing the polarity of an AC power cord will cure it.


Yamaha K-720 cassette deck will not play tape--immediately stops on auto-stop (or, perhaps, auto-reverse.) Fast-foward and fast-rewind are okay. Had this same problem repaired in the 1980s. How do I...

your problem is the flat belt that drives the 2 capstans. I asked you to check switches but remembered afterwards there is a different motor for fast forward reverse. When the machine is powered on, the capstan motor runs all the time. I bet the 2 capstans are not turning. You can see this if you slide up (gently) the cassette tinted cover. You need a new belt. If you are handy, you can do it yourself (about 2 hours) but it is tricky as you have to remove the complete cassette mechanism and then partially dismantle it to put on the new belt. If you need help I can probably guide you a bit. I just did it a few months ago. The belt size is 9.6 inches. One part number is FBM9.6 or you can try Yamaha service.

Downloading an instruction manual for the K-700 Cassette Deck

Make sure you have the correct model # and go to the Yamaha web site. There is no K-700 but there is a K-720 (I have this tape deck).

Tascam 122 cassette deck the cassette player won't play

There is an idler wheel behind the platen ( black plate behind the cassette)..replace the idler wheel.

The guy in texas is Marrs communications


if the heads are getting jammed in the up position it may be a failing capstan belt in the transport not disengaging the transport properly. replace the capstan belt. If one has failed both will probably be bad.
Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:


Ask a Question

Usually answered in minutes!

Top Audio Players & Recorders Experts


Level 3 Expert

13435 Answers


Level 3 Expert

5720 Answers

The Knight
The Knight

Level 3 Expert

76823 Answers

Are you an Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides