Amp technicians, what’s this white stuff?

Discussion in 'Gear & Equipment' started by Bearitone, Apr 14, 2019.

  1. Bearitone

    Bearitone SS.org Regular

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    So I’m stripping the chassis of an old VH140c so i can sand blast and powdercoat it.

    I’m removing all the electronics and I’m wondering what is this white stuff under the black square component?

    [​IMG]

    It’s still liquid (not hard) and has plastic/chalk smell to it. What is it’s purpose? Insulation?

    When i put the amp back together i want to use the same stuff so i don’t screw anything up lol.

    Thanks for your time!
     
  2. diagrammatiks

    diagrammatiks SS.org Regular

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    Thermal compound actually
     
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  3. technomancer

    technomancer Gearus Pimptasticus Super Moderator

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    ^ what he said
     
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  4. oneblackened

    oneblackened Doesn't Actually Play a Seven String

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    Certainly looks like thermal grease. Do you know what component that is? If it's using the entire chassis as a heatsink I'm curious what it is.
     
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  5. vick1000

    vick1000 SS.org Regular

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  6. USMarine75

    USMarine75 Contributor

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    Hair gel?
     
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  7. Vostre Roy

    Vostre Roy Disciple of Djod

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    Ask Janice :french:

    But yeah must be somekind of thermal compound
     
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  8. Bearitone

    Bearitone SS.org Regular

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    Thank you! I’ll be sure to order some.

    I finally got the chassis free btw
    [​IMG]

    I’m going to have it powder coated white but, other than using an embossing label maker, i don’t know how to print/mark/paint all the labels onto the face plate once it’s done.

    Any tips on that?

    Maybe i should just give this refurbish project it’s own thread lol
     
  9. mnemonic

    mnemonic Custom User Title

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    You could try designing a faceplate on your computer or something, then printing it on to waterslide decal paper (I think you can just use a normal printer?) and then put a clear coat over it once it’s on the metal.

    Not sure what texture you’re going for with the powder coat though. If it’s rough texture you might have issues.

    Or if you know any signage companies or people who can etch plexiglass or some other plastic, have a faceplate made (make sure holes all line up) that can just be held on by the nuts on the pots.

    I think there are also companies that specifically make logos and faceplates for DIY amps, but that is probably your most expensive option.

    Gonna stay with a combo or make it a head?
     
  10. Bearitone

    Bearitone SS.org Regular

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    Those are all cool ideas. I just watched some videos on how to transfer toner prints using polycrylic and water. It definitely seems doable but, if I screw up I don't know how I would remove the print without removing the powdercoat as well. Maybe I will just go with the "Boutique Prototype" look by using embossed logos and just enjoy it.

    And I'm going to stay combo I think? Its just a bummer because the vh140c combo is not only open back but, open front too. Theres about a 1 inch gap than runs along the entire front of the amp. The front lip of the face plate and the removable grill cloth panel work together to hide the gap but, its there. I'll post a picture in a sec.

    Maybe I will just do a head conversion too...
     
    Last edited: Apr 14, 2019
  11. Bearitone

    Bearitone SS.org Regular

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    [​IMG]
    See the gap? Look between the heat sink and transformer. That gap runs along the whole front of the amp. Maybe all combo amps are like this and I’m just ignorant af lol?
     
  12. mnemonic

    mnemonic Custom User Title

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    That gap is fairly large, though most combos I’ve seen don’t steal the front.

    That being said since the heat sink is on the back, you may be able to seal the back and that gap, since you’re taking it apart anyway.
     
  13. vick1000

    vick1000 SS.org Regular

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    It's not unusual for there to be a gap between the baffle and the chassis.
     

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