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strange aerial?

Discussion in 'Electronic Repair' started by neilish, Feb 10, 2006.

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  1. neilish

    neilish Guest

    am working on a fender passport p150 stereo mini pa system which fender
    wont service because it is out of warranty. fender never intended to
    fix this item cause it took me 2 hrs to take appart and all the
    connectors are glued on. in takeing this appart i came accross a
    screened cable coming out of the screened box which contains the
    electronics ( i have a shorted output transistor and shorted positive
    supply and the switch mode power supply keeps on trying to start giving
    a fart in the speaker of the channel which is still working) anyway its
    a cert ive got blown output transistors on at least one side but the
    thing is what is this screened cable coming out of the box and
    connected to a piece of wire which sits encapsulated in plastic inside
    the handle of the mixer unit. are we supposed to believe it senses the
    electromagnetic field of the room and performs some kind of subraction
    from the output for hum cancelling- or is it a tamper proof device to
    check for voided warranty - any guesses? - unit is out of warranty and
    fender refused to service it anyway!
  2. Arfa Daily

    Arfa Daily Guest

    This amplifier system is wireless enabled. There is a range of wireless
    accessories that can be used with it. The screened box contains the
    receiver, and the wire that comes out of it, is the antenna for that
    receiver ...

  3. neilish

    neilish Guest

    yeah could be that would explain it - thanks - neilish
  4. Ron(UK)

    Ron(UK) Guest

    There`s all sorts of odd wires dangling about inside those nasty things,
    if it`s not the wireless version, in might be just the wiring that would
    go there if it was - if you see what I mean. I've got one (a 250 - psu
    suicide) in front of me now with a grey screened cable hanging loose,
    with sleeving over the free end which I presume is normal. There's also
    a concealed D connector with some unused wiring taped inside.

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