Tag Archives | MXR repair

Broken footswitch repair

Broken footswitch repair – MXR Carbon Copy

This broken footswitch repair was sent to me because the owner suspected that his pedal had the ESD problems that I’ve documented elsewhere.  Actually, the footswitch was broken by mechanical use. This is comparatively rare – MXR use quality ‘Alpha’ parts for their footswitch. The unit was soon fixed, and shipped back to its owner, […]

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Dyna Comp Repair

MXR Dyna Comp repair

The Dyna Comp is possibly the most famous of the compressors used on guitar. This Dyna Comp repair was similar in nature to the ESD fix that I’ve documented elsewhere in relation to the Carbon Copy pedals.  The issue is with the switching circuit – the FX does not switch in when the pedal is […]

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Carbon-copy-repair

MXR Carbon Copy Repair

I’ve talked elsewhere (here and here) about Carbon copy repairs and the ESD issue that causes the problem. I’m just going to take a moment to discuss the symptoms that show the problem in the carbon copy pedal. As I understand it, this issue has been fixed in new production units so if you’re buying, […]

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MXR Repair

MXR Repair – Carbon Copy

This poorly delay pedal repair had the same problem as this MXR repair job from last year. This is a known ESD fault with Carbon copy delay pedals ‘of a certain age’. As you can see on the photo, this Delay pedal uses surface mount technology (SMT). This can be a little fiddly to repair, […]

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MXR-Repair

MXR Repair – Carbon Copy

This MXR repair, a Carbon Copy, was a simple fix. ESD (static) had destroyed 3 switching transistors used in the bypass circuitry. After identifying the fault I contacted MXR to find the part numbers of the damaged items. MXR are aware of the issue and recommended a modification to significantly reduce the likelihood of a […]

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