Einleitung
Werkzeuge
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Use a Phillips #0 screwdriver to remove the four 21.7mm screws holding the back panel to the frame.
 
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Once the screws are out, use a plastic opening tool or spudger to pry the top of the back panel open. There may be some resistance, but it will eventually pry loose.
 
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There will be two black wires connecting the top mounting bracket to the reverb box at the bottom of the unit. Label the wires to prevent crossing upon re-installation, then unplug the wires from the reverb box.
 
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Label and unplug the two red wires connecting the mounting bracket to the speaker by pulling them off the nodes.
 
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Use a Phillips #1 screwdriver to unscrew the four 36.4 mm screws holding the mounting bracket to the top of the amp.
 
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Pull the mounting bracket free from the frame. It may be wedged in very snug, in which case, use a plastic opening tool/spudger to pry it loose from the front.
 
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Mark, make note of, or remember the arrangement of the wires.
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Remove the four female disconnected terminals from the switch terminals.
 
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Using the flat end of a spudger, push in one of the wedged locking clips.
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Partially tilt the switch box so that clip is held down.
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Repeat for the other side of the switch
 
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Be sure that both locking clips are pressed through the opening. This may take a few tries.
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Gently remove the switch.
 
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Once the old power switch is removed, install the new one by following the guide in reverse.