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Peavey T40 wiring specialists...HELP!!!

Discussion in 'Pickups & Electronics [BG]' started by Gintaras, Jan 4, 2008.


  1. Gintaras

    Gintaras

    Dec 11, 2004
    Kent Island, Md.
    Just got a 79' T40 a few days ago. The pickup selector switch does not work in the center position to activate both pickups. The center position has a soft level hum. Replaced the switch and nothing changed. Have the schematic and everything seems to be wired correctly. Could a defective phase switch cause that problem?
     
  2. Nighttrain1127

    Nighttrain1127 Supporting Member

    Nov 27, 2004
    Near Worcester MA
    Follow the wires back to where they come from there may be some missing insulation and bare wires may be touching and causing the problem. also Be sure it is the correct switch It should say in the print if it is Spdt or dpdt .
     
  3. Gintaras

    Gintaras

    Dec 11, 2004
    Kent Island, Md.
    didn't hear it earlier but the stereo is off now and there is a hum at the center position and not silence. Still no sound except for the low level hum. Going to take it apart again and recheck the wiring.
     
  4. Gintaras

    Gintaras

    Dec 11, 2004
    Kent Island, Md.
    one more update... I took the pickguard off and there is a red wire that runs from the center posts to the jack. When the pickup switch is in center position and :meh:I touch this red wire then the hum quadruples in volume. I checked the rest of the wiring and did not see any problems except that the manual states that the phase switch is 2 position and the one on my bass has 3 positions. The wiring looks correct on the phase switch.
     
  5. Gintaras

    Gintaras

    Dec 11, 2004
    Kent Island, Md.
    I'm the village idiot today!!! Grabbed the wrong part at Radio Shack. The switch that I bought looked identical but got the one that the center position was 'OFF'. :crying:

    Going back and get the one with Center is 'BOTH'
     
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