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Sony WM-GX670 belt source needed in the US

Discussion in 'Tech talk' started by euroflash, Jan 9, 2024.

  1. euroflash

    euroflash Member

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    @radiorich Thank you, Richard.

    I already got the clutch gear, and possibly have a lead on a NOS flywheel. With some good luck, I will have all the parts soon.

    Best,

    Alex
     
  2. euroflash

    euroflash Member

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    A quick update: I installed the belt from DeckTech and it is a perfect fit! The slack is gone, and the tape speed has stabilized, mostly. There's still some difference between FWD/REV, but W & F has been reduced significantly and even audibly. I also reset the playback speed back to the previous levels, since the inner capstan tension has increased. @Valentin - thank you so much for the lead on the Mana_Tree vendor.

    The clutch gear replacement arrived also. This is the next step. I will keep you updated on the progress. Thanks for all the help!
     
    RTB, Emiel and Valentin like this.
  3. radiorich

    radiorich Active Member

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    Sony tr610.jpg Hello EuroFlash,
    Nice that Sounds good this last weekened I restored My Sony model TR-610 Am transistor radio it really works well after replacing the smalled Can electrolytic which had 3 electrolytics in on can .
     
    Emiel likes this.
  4. euroflash

    euroflash Member

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    @radiorich Very nice! I love seeing those classic gems brought back to life.
     
  5. radiorich

    radiorich Active Member

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  6. euroflash

    euroflash Member

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    Just a quick update, a bit delayed. I had to reorder the clutch gear as it arrived cracked. The eBay seller had integrity and took care of me with the new one.

    Once again, a complete disassembly and desoldering followed. I examined the flywheel for cracked gear, and it was negative. Whew! (Valentin suspected it was the cause of high-frequency clicking noise).

    Once I installed the new clutch gear, the mechanism worked without issues. I was surprised to see that a tiny crack in the clutch gear can cause so much trouble, this was a new learning.

    In summary: a new and correct belt and a clutch gear replacement did the job!

    @Valentin, thank you for your expertise and guidance. I appreciate it and it helped to narrow down the problem.

    A side note: working on these tiny Walkmans is not easy. It requires dexterity with tools, good eyes (or a magnifying glass), and a ton of patience.
     
    Emiel and Valentin like this.
  7. radiorich

    radiorich Active Member

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    Euroflash ,
    Sorry to hear that about that gear and yes who would think that little crack would make that much diffrence but it does anyway I also restored a Sony Tr-620 and I won a General Electric built in 1957 am transistor set and I have two tube car radios to restore for customers !
    Sincerely Richard
     

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