Ghost LEDs

[DrJustice]

When a LED in matrix column 1 is lit, LEDs on the same row in column 4 and 8  are also dimly lit. This pattern repeats for column 9 for which LEDs in column 12 and 16 are dimly lit. This repeats for all rows and for all matrix panel modes and colours. The 4/8 and 12/16 column LEDs are quite dim, but still easily seen in a not so well lit room. The 4 and 12 column LEDs seem to be somewhat dimmer than the 8 and 16 column LEDs. Also, the 4/8 and 12/16 column LEDs flickers a bit when changing the patch and also afterwards, although at a slower random'ish rate.

Does anybody else have the same thing (dim your lights if checking for this)?

[BobTheDog]

Same here, I had noticed it before but hadn't looked into it in detail but doing so now mine is exactly the same.

[PXPT]

Just checked and I can confirm that it is the same with mine. Looks like it's an artifact of the multiplexed scanning of the matrix board. If the multiplexing is done via a hardware counter/decoder then there's probably nothing that can be done with it. But I suspect the panel is handled by it's own processor in which case it's program could be tweaked.

[Kogi]

Is the same as what happens to my MB, it does not bother me but it looks weird.

[DrJustice]

OK, so nothing out of the normal. Thanks for checking guys, that puts my mind at ease

@PXPT : There's an ARM uC on the matrix board, so with a bit of luck the switch timing can be tweaked.

[SoundRider]

Funny, have this too ... is this light traveling along the semitransperent rubber, or LEDs inadvertently powered 

[DrJustice]

It's not light bleed, that's just happens with the couple of closest buttons. This is in the firmware/circuitry. Better mention that it doesn't bother me much, especially now that I know it's common to all units, and perhaps even fixable in firmware.

[SoundRider]

Yeah ... same here, as long as there is no issue with the synth, it's no problem for me either 

You are right ... in dim light I can see a bleedng from a central LED to the buttons next to it too. It's the nature of the rubber and is no problem at all