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Hello! I have this one older AC-DC adapter from Korg (wallwart?)...
...that I have been using for my (guitar) effect pedals for a few years, and I recently found out (when I was doing some electronics doodling) that the adapter gives much more voltage than it's supposed to. I should give out +9V (as it is clearly seen from the picture), but when I measured the voltage by my multimeter, it is showing...
...more than 14V! It freaked me out a little bit, since I may have been using it like this as a +9V adapted for my (expensive) delay, and that certainly could have been good for the pedal.
Does anyone have an idea of what's wrong with the adapter, since I have never opened it up or messed with it? Or am I measuring it wrong? And possibly, is there an easy fix?
EDIT: How can I find out that the adapter is "unregulated" (is it the same as unstabilized?) and it's not broken?