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Send/Receive 1/4 inch socket bypass switches

Discussion in 'Electronic Repair' started by N Cook, Mar 26, 2007.

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  1. N Cook

    N Cook Guest

    For those of you who say "always replace" - ignore the following.
    It is for people like me who find it pointless replacing with weaker modern
    replacements unless the original is obviously weak with much reduced
    switch-closure force.

    Yet another amp "failing" due to dirty/grimey such unused bypass switch.
    I prefer to beef up the closure force on the existing ones , after cleaning
    the "contacts", (contact is far too grandiose). The spring action is still
    good but beefing up will make dirtying/griming of contacts less problematic,
    loss of amp-preamp by-pass action less likely, better contact with 1/4 plugs
    where the send/returns are used.
    Requirements - Hama beads (small
    coloured plastic rings, trade name, they get everywhere if kids use them)
    for making pseudo mosaics on a sort of pegboard found in toy / craft shops,
    the size required here 5mm wide, 5mm outside diameter, 2mm inside diameter.
    2mm silicon rubber cordage from angling shop.

    Two plastic beads rest neatly in the exposed groove part of the flexing part
    of the switch, to spread load , locate neatly in housing and act as grips
    during assembly. Take 2 beads and 150 mm of cordage , pass through both
    beads and return to pass through a second time. Pull the first cord to
    reduce the diameter, introduce the other cut end and by a "preristaltic"
    action pull the second run through each bead like this. Pull tight to form a
    loop of about 6mm diameter. 2 tight passes through 2 rings mean this loop
    stays as formed while finishing off. This loop, stretch over the open end of
    the socket, with the beads in the groove. Loop the free ends of the cord
    around the other side of the terminals and wires and tie tightly via the
    other side of the terminals at the "hinged" end. Swathe in hot-melt glue to
    avoid the knot untying and bond to the socket housing, to avoid the hinge
    end , free end of the socket , cordage dropping off again, unlikely as the
    contact ends drop in a slot in the housing . Cut off loos ends of cordage.
  2. RonSonic

    RonSonic Guest

    You could just educate your clients. Proper amp care includes exercising all
    controls and jacks once or twice a year. It's that simple. Really.


    Effect pedal demo's up at
  3. (excellent instructions snipped)
    I thought weak switches happened from end-of-
    lifetime considerations... or some insane temperature.

    That said, the level of work given here (we haven't
    even gotten into the switch yet) implies that this
    procedure should only be attempted on a switch
    that is no longer available, or is otherwise original
    to a collectible amp. I repaired a stomp switch in
    my tweed Falcon's footpedal simply by opening
    it up and re-distributing the factory grease that
    had worn away... thing works fine now. I had to
    drill out tiny rivets and go back with 2-20 hardware,
    but I felt it was worth it.... looking at two worn
    buttons being nicer than one shiny and one worn.
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