Question about Audio Players & Recorders

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I have a Sony sports walkman model wm-f73, and most everything works, radio works all the nobs work but the only thing that doesn't work it the cassette player. It will turn and rewind and fast forward, but when i try to play a cassette it fails to work.(the cassette was tried on other devices and it still works) does anyone know what to do? I would really like to get this thing working again. Thanks Nick

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Hi Hector, if you have a leash, I pass you the link to download the service manual of the Sony walkman WM-F63, which has the same mechanism
I hope you find it useful
Regards Franco Dosil

Hola Hector, si tiene correa, te paso el link para descargar el manual de servicio del Sony walkman WM-F63, que tiene el mismo mecanismo
Espero te sea util
Saludos Franco Dosil
https://elektrotanya.com/sony_wm-f63.pdf/download.html

Posted on Aug 21, 2019

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Cassette players specify time length compatible, e.g. 30, 45, 60, 90 minutes, most are 60.
Internal, most are belt and/or disk driven. The belt is rubber, the disk edge is rubber. Rubber has a life span before it stretches or falls apart.
Lubrication may or may not be needed. Oil is bad for rubber and sometimes plastic of that sort. Precision pokers are used on metal moving parts on bearings.
Most likely, the player needs to be taken apart to inspect the internal condition and treated accordingly for the cassette driver to work well.

Posted on Aug 21, 2019

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Hi folks,
I have a Sony walkman WM-F73, the readio works, but not the cassette player, if I press the FF or RW , the motor sound like is working , but not movin the wheels, if I press the play I can ear noice in the eadphones but again the wheels doesn't move, Does this Walkman have Belt mechamism ?, I can't imagine because is to slim, so I thought that have gears instead of belt, Did someone had faced the same issue ? ...thanks

Posted on Aug 21, 2019

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

SOURCE: URGENT HELP cassette player problem, please reply

I HAD EXACTLY THE SAME PROBLEM ALL I DID WAS TAKE APART MOVED ALL WHEELS AND COGS IN SIDE AND JUST BLEW OUT ANY DUST CLIPPED BACK TOGETHER AND WORKED FINE PLAYS GREAT HENCE WHY IM LISTING IT ON EBAY.HOPE YOU HAVE SUCCESS

Posted on Sep 14, 2008

  • 1 Answer

SOURCE: Sony Walkman WM-D6C

If your WM-D6C has a serial number below 267201 (take out the battery block and you'll see the serial number sticker there) then the problem is electronic, not mechanical. It is likely due to the speed controller chip (labeled as IC601 on the circuit board), which is made by Sony and is type CX20084. This chip decides the voltage that is fed to the motor which is only about 2.4 volts, Should the chip be defective then the motor receives about twice this voltage and thus runs too fast. If you take the back off the recorder you will see the circuit board; it looks like a rectangle with a small square extra bit sticking out to the right. It is here that the IC601 resides. It is about the size of a small pinky finger nail and has 8 tiny legs down each side. Measure the voltage on pin 15 (put one voltmeter probe (+) on the second leg down on the right side (pin 15) and the other one (-) on the battery negative), it should read about 4.8 volts, which it feeds into the base of transistor (Q601) that in turn will then feed 2.4 volts to the motor (if everything is working OK). If the chip is damaged, then the voltage on pin 15 will be close to zero, and the transistor Q601 will not be "held back" and so will feed about 5 volts to the motor. CX20084 is (unfortunately) obsolete, someone in the UK sells them for about $50, but an excellent company in Hong Kong (utsource.net) sells them for $5 (plus $8 S&H). Taking out the old chip and putting in a new one is close to microsurgery, you will need a micro soldering iron (18Watt Antex), a good eye, a powerful magnifying glass and a steady hand, but it can be done - I've done it! There is a possible second reason that could cause the motor to run too fast. There is a pick up coil on the main flywheel called FG901. If this is damaged it will be open circuit and then the only use for your recorder is probably a paper weight. You can test this by going back to chip IC601 and locating pin 1 (top left pin; a small circle on the body of the chip is next to pin 1), Pin 1 is connected to the positive side of a capacitor,  C602 (0.47 microF), check the resistance from the negative side of C602 to the ground (take battery out, and use battery (-) as ground). You should get about 600 - 650 ohms reading. If you get nothing, sorry there is not much you can do about it as these pick up coils are definitely not available. Finally, chip 601 (CX20084) goes bad if you connect the batteries back to front. Good luck. Giles..

Posted on Jan 16, 2009

  • 11 Answers

SOURCE: Sony Walkman cassette player/recorder will not rewind the tape

Fat chance to repair yourself! we repair that WmD6c but very hard to do!

Posted on Feb 26, 2009

  • 11 Answers

SOURCE: cassette drive turns, speakers hiss but no music

Mode switch trouble! no audio from cassette function?

Posted on Feb 26, 2009

farr64
  • 121 Answers

SOURCE: Sony tcd-d8 won't rewind

sounds like a belt slipping try renewing them they are fairly cheap to replace.sony tend to be very reliable but this is quite an old item now and belts degrade with time and use.farr64

Posted on Apr 30, 2009

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