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Walkman CASIO AS-620R buzzing noise

Loefie

Jul 16, 2023
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Recently, I obtained a CASIO AS-620R walkman. The radio seems to work as it should, but when playing tapes there is a buzzing noise. The noise increases when increasing the volume and disappears when the volume is at the lowest. What could this be, and how could I fix it?
I have no knowledge of walkmans whatsoever, so I’m hoping this will be an easy fix.
 

Delta Prime

Jul 29, 2020
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Try a different tape.

Clean your magnetic pickups 99.9 isopropyl alcohol

Anything else would require for you to open it up make some quick measurements with the multimeter after that the defective component must be replaced and that requires soldering and desoldering that would go into the category of not an easy fix

But if you're good with soldering iron I can walk you through it

For cassette tape players they have cassettes that are made to clean your pickup heads

The radio seems to work as it should, but when playing tapes there is a buzzing noise
That buzzing noise is in your head!
:D
I should have went with that first. Dam I'm good.

I know it may be hard to get to kind of tight without unscrewing anything but can you take a photo of your magnetic pickup heads
 

Loefie

Jul 16, 2023
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I know it may be hard to get to kind of tight without unscrewing anything but can you take a photo of your magnetic pickup heads

Hahaha I’m 99% sure the buzzing is not in my head ;). A different tape makes no difference. I’m sorry for being this clueless, but what are the magnetic pick-up heads?
 

Delta Prime

Jul 29, 2020
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I’m sorry for being this clueless, but what are the magnetic pick-up heads?
It's okay I'm clueless as well this is the first time I've ever heard of cassette player. I don't think anyone under the age of 30 would know what that is.

But I am what they call an expert give me a 10 minutes I'll be back to answer your questions

CASIO AS-620R
Are you sure it's a 620r can you confirm please
 

Delta Prime

Jul 29, 2020
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Okay that was over 10 minutes so I'm not an expert I admit it.
The backside fungal dust is deposited on the Pressure Pad. When the tape moves, it experiences friction with the tiny dust particles over the pad, making the noise. This noise is somehow picked up by the Head and reproduced as a high pitched squeaking noise throughout the playback


But I was right and I have no idea why? Next up is your tape heads I'll just get a basic example off the interweb
I'll be back

Below is a photo of your tape head pick up. If you have that high squeak sound throughout playback of the tape then we're on the right track. Has stated above thorough cleaning of the tape head pick up you should be able to see it immediately when you open the case take a photo I like to take a look.
1689545563171.png

It is your old tapes that is depositing the fine dust particles after cleaning try a new tape or the newest one you have see what happens

Also if you scroll down you'll see similar threads that may point you in the right direction heck I never noticed them till now.
 

Loefie

Jul 16, 2023
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Below is a photo of your tape head pick up. If you have that high squeak sound throughout playback of the tape then we're on the right track. Has stated above thorough cleaning of the tape head pick up you should be able to see it immediately when you open the case take a photo I like to take a look.
View attachment 59887
5C9C11BE-DE2F-4FEC-9E18-9CA00A0FE046.jpeg

The round thing is the tape head I think? Sorry, it won’t open up far enough to make a clear photo…

So if I understand correctly, cleaning it might solve my problem? How do I clean it?
 

Delta Prime

Jul 29, 2020
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I would get a can of filtered air.
Considering the age as well & a demagnetizer it is only an example the link below.you may get a cheaper price somewhere else
Sorry but I have to go now I wish you luck.
 

Loefie

Jul 16, 2023
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I would get a can of filtered air.
Considering the age as well & a demagnetizer it is only an example the link below.you may get a cheaper price somewhere else
Sorry but I have to go now I wish you luck.
Alright I’ll be trying that. Thanks for your help!
 

kellys_eye

Jun 25, 2010
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Nothing to do with the tape head. Most likely due to the suppression capacitor across the tape drive motor. Not easy to determine given a simple description of the noise!
 

Delta Prime

Jul 29, 2020
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Nothing to do with the tape head. Most likely due to the suppression capacitor across the tape drive motor. Not easy to determine given a simple description of the noise!
Put it on your favorite AM station and hit the rewind button.
Easy enough for suppression capacitor that's faulty across the drive motor.
Wished I thought of it though.
 
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