A faulty input jack is a common problem in Fender guitar amps, mostly because the jacks take the most abuse from the owner. Stepping on a guitar cord when it is plugged in or excessive banging or shaking when transporting the amp to gigs can easily break the inner components of the jack, forcing you to get a replacement. Replacing the input jack on your Fender amp is a matter of having the right tools and an hour of undisturbed attention.
- Skill level:
- Moderately Challenging
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Things you need
- New input jack
- Phillips screwdriver set
- Soldering pen
Turn the amp off and unplug it. Use a Phillips screwdriver to unscrew the casing in the back. Remove the casing.
Move the circuit board away from the front panel. Do this by removing the screws that attach these two parts, including the ground lug that attaches the circuit board to the input jack. Gently wiggle the circuit board back so you have enough space to work on the input jack.
Use pliers to unscrew the hex nut connecting the input jack to the faceplate.
Use a soldering pen to desolder the old input jack from the amp. Remove the old jack. Solder the replacement jack into the hole so it has a sturdy fit. When you are done soldering, wipe all surroundings with a dry, lint-free cloth.
Move the circuit board back into place so that all control pots are flush with their corresponding buttons. Re-tighten all the screws with nuts and washers in the correct position.
Close the back casing of the amp, reattaching all the removed screws. Plug in the amp and power it on.
Tips and warnings
- All work involving the circuit board of your amp should be done on a static-free surface, such as a wooden desk or static-free mat. Never work on an amp over carpeted areas.
- When reattaching your circuit board, pay special attention to the drive LED; it can easily fall out of position.
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