Question about M-Audio M Audio Keystation 88es 88 Key USB Midi Controller
I have two of these. First thing check your power adapter for output. Just because LED's are on doesn't mean there is correct voltage... There is no reset button... Cycling power serves to reset it.
ALSO check the power input connector... sometimes those get intermittent and break connection due to vibration and initial current surge when turning on.
Posted on May 31, 2010
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Posted on Jan 02, 2017
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