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Need an adhesive for a CRT coil

Discussion in 'Electronic Basics' started by Yukio YANO, Jul 13, 2006.

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  1. Yukio YANO

    Yukio YANO Guest

    Use Silicone sealant !

    the Vertical Coil runs around 30 to 120 Cycles /second barely audible
    the Horizontal Coil runs around 15000 cycles/ second .

    The Squeal is usually generated by a mechanical problem with the Flyback

    Yukio YANO
  2. Guest

    BEWARE that some silicones are conductive until fully cured ! That
    'vinegar' smell is acid which is the conductor. Great stuff if given
    the time to cure.


  3. is the newsgroup you want.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  4. Eeyore

    Eeyore Guest

    No. Bath sealant !

  5. Mark Fortune

    Mark Fortune Guest

    I have a CRT monitor that has a dodgy Vertical deflection coil - the
    thin copper wire seems loose in places and far too often I can hear it
    oscillating - it's a very high pitch annoying noise and i'd like to fix
    it. My first thought is to smear some sort of adhesive or epoxy around
    the coil to hold it in place, but im conscerned weather this might have
    adverse effects which I may not be aware about.
    Any crt experts out there have any recommendations on what kind of gluey
    substance can be used? or perhaps there is a better method of dealing
    with this sort of thing (which doesnt involve the skip)

    thanks in advance,
  6. Mark Fortune

    Mark Fortune Guest

    I think I have some of that hermetite stuff I used to use on the car
    gaskets. red or blue?

    Ah, it might be the H coil then, im not sure. what I know is the coil is
    loose and im fairly certain its the source of the noise. Reason being I
    tightened it a little the other day by pulling it tightish and
    re-soldering one of the ends, that seems to have quietenned it somewhat
    but I didnt pull it too tight through fear of snapping the cable.
    Perhaps I could try unsoldering one end and partially re-winding it over
    the weekend. This also seems to have reduced, but not eliminated, the
    other problem I was having of flyback lines appearing across the top of
    the screen. According to other posts im told this may be a capacitor at
    fault which I intend to replace but i've found what I believe is the
    timing capacitor and it's something I need to go shopping for as I dont
    have one in stock.
    All this for one little kitten puking in the monitor about two years ago
    :\ (problem's been around since then). Had fun scraping dried vom off
    the circuit board.
    hmm, vinegar.
    thanks for the advice
  7. jasen

    jasen Guest

    blu is IIRC neutral cure (if the same as the blue permatex stuff)
    so use blue.

  8. Mark Fortune

    Mark Fortune Guest

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