Hi All I'bve been using a very old 520 for a show recently (the show file that was loaded when I turned it on was from 2014 so it hadn't been out of the case for a while!) It worked great until just before the final performance when suddenly the subs stopped working and the LCDs went blank (although DMX still outputs and all the buttons still work) The midi port also stopped working which was unfortunate as we were using Qlab to fire MSC into it. Luckily we got through the show and since it was the final one it wasn't a disaster, but I would like to get the desk fixed for old times sake. Does anyone have any idea what may have happened? I have a suspiscion it was to do with the midi as I noticed that someone had re-plugged the midi so my adaptor went from the in to the thru, which shouldn't cause a problem but seemed to have happened that day so seems unlikley to be a co-incidence. Any ideas appreciated! Richard