I mentioned this to Korg yesterday, and apparently their service engineers
are aware of this.

Incidentally, the fault was not with the LED itself - it was the bridge
between their solder pads that had maybe grown some whiskers or other
contamination. I measured something around 100 ohms IIRC, dunno it was a
quick check that I took to be a dead LED.

Others of these LED pads had been manually resoldered at some point, either
as a post sale repair or during manufacture.



Gareth.