There is no adjustment to control the brightness in korg pa50/sd.
It is hardware problem.
-Is the white backlight that is too high?
or
-normal backlight,but words is too dim?
Both of that case,can be caused by damage / change of voltage control for lcd. Perhaps there are parts that are damaged or have changed in value. Typically capacitors etc.
If the backlight is too bright, then the damage is in backlight controller, may transistor or an inverter transformer.
Proceed with the repairs to the experts.
SOURCE: hi i got the korg
Hi
I have the same problem here, just happened today. Can you update me on the status of your device and how you fixed it?
Thanks
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