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how would I check a new pre wired eq for faults

Discussion in 'Pickups & Electronics [BG]' started by robot10, Jan 16, 2013.

  1. robot10

    robot10

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    Fitted a 3 band eq to my p/j style bass and it only works with the jack slightly pulled out and the eq controls don't seem to alter tone , every thing is new except the pick ups which have always worked fine before hope some one came help thanks in advance.
  2. Andyman001

    Andyman001 Supporting Member Supporting Member

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    A lot of pre-amps use a TRS (stereo) jack to connect the battery to the circuit using a mono instrument plug.

    If you can, insert a plug an check that the contacts are contacting the plug.
  3. robot10

    robot10

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    I have plugged a jack in and can see its touching all 3 terminals but as soon as the jack clicks in the sound goes, and it is a stereo jack it came pre wired
  4. Andyman001

    Andyman001 Supporting Member Supporting Member

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    All I can suggest is to look at all of the solder joints. Thats all I got.

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