images via this auction"The most common problem with the GR-700 are broken foot pedals. Hey, you stomp on them all the time!
Below is a video clip of replacing a GR-700 pedal. All you need is a soldering iron, some solder, and a large, flat tip (standard) screwdriver. First you will remove the twelve 3x15 mm self-tapping screws that hold the side panels on the GR-700, and then remove the 3 4x6 mm screws along the front of the unit. You can now open the GR-700 up. Carefully lift the lid. I placed the unit on the side for my repairs.
You will reheat the solder that holds the wires to the switches with a soldering iron. You may need some fresh solder to help the joint to soften.
After you have the wires off, you need to remove the pedal itself. This is the hardest part. Start with one of the plastic tabs and gently push the tab in. You do not need to push the tab in all the way. While holding the pedal in position with your free hand, do the same with the opposite tab as shown in the video. By alternating between the tabs you can gently work the pedal out. After you remove the existing pedal, the replacement pedal will snap into place. When you press the new pedal in, make certain that the four plastic clips "click" into place. Then resolder the wires and you are done.
Here is a video clip of one pedal replacement: link"
The video is from the excellent Roland Guitar Synth site. Do check it out if you haven't before.
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