Sony WD-60 , a rare Walkman that I can't find any documentation for my reparation

( a copy of my introduction )
It all started when my father gave me it's Walkman , ( The WM-60 ).
It didn't work, so I tried my best to find documentation of the inside or just a guy repairing it. Guess what?
This Walkman was around just for one year or two, so it has very little documentation.

Now , I'm trying to repair it . I got a new belt but with all the adjustment I've done so far I can't find an solution for it . So , I'm here , trying to find some solutions (and enjoying the old tech world that I love ) .


It when I turn it on, it seems that the rotor won't adhere to the belt.
It causes the issue that all the part don't move.

Maybe the belt is too small, or should I lube the rotor?

Plus, the upper right component don't spin with the rest if I do it manually.

could you help me?

 

Hi
I don't own this model, but check this site
https://gaagaadou.com/wm-60/

 

And some additional info here:
https://walkmancentral.com/products/wm-60

Full service manual might help:
https://freeservicemanuals.info/nl/servicemanuals/viewmanual/Sony/WM60/
(click after Type a on WM-60)

 

@Flops The belt routing is not correct. It should not go over the supply reel at all. Only on the motor, idler and 2 flywheels. There is probably a picture in the service manual, but I will provide an additional one.

As a sidenote, the WM-60 is a nice walkman and seems to be pretty rare. In red color it looks even better.

 

Ho nice, I did check walkmancentral.com and there wasn't a manual. And wow, How do you guys find all these links? If i type Walkman 60 or wm-60 eBay or walkmanland shows to me but not more, guess duck duck go won't let me search X)


Ho and a jap website, sweet.

 

search google for images
it should be Sony WM60 ... not wd60

 

( he-he Dad do love Red) , BTW thanks to this new belt configuration all is running perfectly , except one thing , no sound is coming out ( I've eared two muffled words when I started the cassette , yes I checked the volume wheel) I have maybe the hint that the 2 sound outputs have some missing parts , I thought that they were just simple metal casing, but maybe they serve for something else?


And ho sweet found a CrO cassette .

 

@Flops Those 2 metal brackets are for mechanical rigidity of the jacks. Although you should put them back to protect the jack and PCB connection, that's not the cause of your problem.

You mentioned something about you have heared two muffled words when I started the cassette, what does that mean exactly ? Is the any sound at all ? Any background noise (hiss) ?
Have you checked the head to be clean ? On the first pictures with the PCB I can't see anything obviously wrong.

By the way, that CDit II slide case cassette is a good one. I have a couple of these and I like them a lot.

 

@Valentin
Well, I've played the cassette in my other Sony recorder-player the cassette just played fine (But now the belt in this one just died, rip).
I've cleaned the heads and when I put the cassette into the wm-60 I only ear noise, ( and I eat the noise when I put the contact between the head jacks and the port. )



I will put back the brackets

 

I don't quite understand what you mean. You say you hear only noise when you put the contact between head jacks and port ? What are you reffering to ?
The flex cable from the head looks ok as far as soldering goes and it looks like you did not unsolder it to change the belt.

Does the noise level increase when you increase the volume level or the noise is constant regardless of volume potentiometer setting ?
Does tuning the Dolby NR on decrease the noise level ?

 

Sorry If I have not expressed the thing too well, So, I hear static noise with or without the cassette , If i increase the volume , then the noises increase. Not a problem from the cassette, as it plays well on the other one.

Dolby NR has no effect on the noise level.

 

Ok, I understand now. It looks like the head may not make a connection to the head preamp.
Another thing to test: move the EQ sliders all the way up. Does that increase the noise ? Is there an audible change in the noise characteristics ?

Do the test with volume turned all the way up and no cassette inserted.

EDIT: also check the head switch, located just below the head flex soldering point. Move it back and forth a couple of times and make sure it is engaged properly with the mechanism.

 

So, The EQ does not increase nor decrease the noise. And no change in n=the noise characteristic.

I checked the Head cable and everything seems normal, no loosen connection or mechanical issues.

And the head looks fine.

The only thing I can't check is the switch as It seems it isn't present in this side, I think I have to unsolder* the points?

*or I'm just blind, I'm tired overthinking this reparation, I should rest X)


P:S I did extra photo of the motherboard's back

 

Anggota baru
halo sobat saya punya sony wm-60 dengan kondisi karet pada pich roller sudah tidak ada, bisa bantu saya untuk mengetahui ukuran dan diameter yang pas untuk menggantinya, terima kasih

 

Happy new year in advance. It's been a while since last post. I moved out and just recently got back to repair our wm60.

I hope you're doing well. I tried today to fix it with no results :



Also , for Firman, I bought it here https://fixyouraudio.com/product/belt-sony-wm-60/

 

Happy new year !

Going back briefly through the thread, think you should check the following things:
- EQ on the door, especially the flex cable. This is the point where the circuit is "broken" between the head preamp/Dolby amp and headphone amplifier.
Not getting power to the EQ module or not getting signal in/out would cause symptoms like you have (with Dolby/EQ not changing the noise floor at all).
- muting circuit. The LA4533M headphone amp has an internal muting circuit which is turned on/off at pin10. Normal operating voltage at pin 10 should be 1.2V according to schematic.

Attached the LA4533M datasheet for reference.

 

yes, thank you! I wish you some good rest and a good Xmas

PS: I will check that later. The ribbon cable is indeed broken and I should seek new one to solder! But I'll do it when I'm back from holidays

 

This is sooooo much help!
I bought a recon wm60 with new belt and pinch roller.... sadly it only just turns a tape and stops. I find out the the idlers are unique and non reparable... or 500 euro if I send it away, anyway I found this and it gave me the courage to pull it apart. Belt is fine and I was able to glue a bit of the door hinge back on.
Now it plays (sounds awesome) one side but if I hit reverse button, it plays the other side slow and backwards!
any ideas?

 

work in progress