Question about Korg Pa50 Professional Arranger Keyboard with SD Card Slot
My system don't operate and display is only turn on but every bottom not work
Posted by Anonymous on
It is power supply regulator problem.
In the regulator circuit, DC 12volt from adapter is separated into +8V, -8V, +5VA, +5VD. Some causes when the unit hang /blank/ frozen is one of the existing supply voltage is drop. In general, +5V.
Also check the adapter voltage, if still normal and the current is sufficient.
Adapter must have DC12volt and current of at least 3 amperes.
It may happen, when the adapter is measured without load, it's read normal 12v, but when loaded to turn on the keyboard, many voltage decreases (lets say,between 8-10v).
This indicates that the adapter is not good and need to replace.
Posted on Sep 01, 2015
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Posted on Jan 02, 2017
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