Any tips on removing capacitor glue on Yamaha CX-1000?

Discussion in 'Yamaha' started by Mr. Yamaha, May 17, 2018 at 9:54 AM.

  1. Mr. Yamaha

    Mr. Yamaha Not so much Yamaha lately... Subscriber

    Messages:
    808
    Location:
    Amsterdam Area, The Netherlands
    During the recap of my CX-1000 I encountered this very stiff and cement like glue which was used to glue on larger capacitors on the main board. It doesn't come off like the other older Yamaha brown glue, which is much softer.

    Normaly I use a sharp piece of wood which doesn't scratch the PCB, but this glue is too stiff / strong. I tried with a small screw driver and already scratched the PCB :yikes:

    Does anybody has tips / experience in how to remove? Any help appreciated!

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  2. Bratwurst7s

    Bratwurst7s In The Frying Pan Subscriber

    Messages:
    3,804
    Location:
    Munich, Germany
    I've had some luck with acetone used repeatedly between careful work with a small blunt and rounded off flat tip screwdriver, but even then it can be extremely difficult to remove. With my CX-1 I got to the point where I decided "good enough" was good enough and gave up because I was scratching the pcb.

    Cheers,
    James
     
  3. Mr. Yamaha

    Mr. Yamaha Not so much Yamaha lately... Subscriber

    Messages:
    808
    Location:
    Amsterdam Area, The Netherlands
    Nice one on the acetone, thx James. It defenitely makes the glue softer. I used sticker remover earlier, but this works better. I'm taking every infected component out to do some proper cleaning.

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  4. Mr. Yamaha

    Mr. Yamaha Not so much Yamaha lately... Subscriber

    Messages:
    808
    Location:
    Amsterdam Area, The Netherlands
    4 hours later...

    All glue gone :naughty:

    Best method: acetone and scraping with the back of a bamboo skewer stick. Made some scratches before with a screw driver, not recommended.

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  5. Spiceman50

    Spiceman50 AK Subscriber Subscriber

    Messages:
    262
    Life Hack:
    Whenever you go out for Oriental food, grab yourself some of those chop sticks. You can flatten out one edge with bench grinder, or file ... or stick one of them in a pencil sharpener to sharpen a tip on the end. Makes for easy access to cleaning various hard to reach areas or lesson damage on surfaces used to scrape.
     
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  6. rottalpha

    rottalpha Yamaholic Subscriber

    Messages:
    1,571
    Location:
    Middle of Crook County
    MX and CX Yamaha's have it and you should be greatful it was not the nasty Sony stuff.
    A heat gun does wonders with that glue. A bit of goof-off or acetore at the end, and is like was never there.
     
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  7. OMGCat!

    OMGCat! AK Subscriber Subscriber

    Messages:
    2,520
    Location:
    Alhambra, CA
    Heat gun is a great idea, I'll have to give that a shot next time. I've been doing the acetone and sharpened chopstick routine normally but anything to speed up the process is welcome.
     

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