Tag Archives | Delay pedal 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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wrong-power-supply-mxr-pedal-repair

Wrong power supply repair – MXR Carbon Copy Repair

Here’s another MXR carbon copy repair – this one had been damaged by the use of the wrong power supply. I’ve repaired quite a few of these Carbon Copy pedals – the older ones are prone to an ESD related fault that’s quite easily fixed. This is the first carbon copy I’ve seen since MXR […]

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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 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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