Hello.
First, please pardon my basic english.
I need some help to try to fix a problem
with a Zero88 XLS24 lighting desk :
Sometimes, not always.., on power on all the leds
stay on , and then either it keeps like this,
either it comes back after a variable time
to an almost frozen, unoperable mode.

Does anyone knowing this desk have ever encountered this ?
Maybe a "dirty" µP reset at power on but i lack elements
to make a serious diagnostic
Where could i get a service manual/schematics ?

I'd like to fix this problem myself, i have been modestly working
in audio and light repair, so you can be (reasonnably... ) technical.
Thanks for your help.

Best regards.
Franck