I have a MIxWiz 16:2 DX (not mixwiz3)
From my understanding, there was an original MixWiz, a MixWiz DX and a MixWiz3. For reference, my mixer does not have the lamp light in the upper right hand nor does it have a mono fader (only 2 yellow left and right output faders).
I recently got the schematic for this mixer hoping to diagnose an issue with channel #5. In looking over the schematic, I also figured out why my recordings with my new Zoom R16 were getting channel clipping.
As it turns out, this version of the MixWiz has the direct out's on each channel POST fader which means that if the combination of the gain and fader get above ~2-4db, I get clipping on my recording.
I decided to open it up and do a little investigating to see what it was going to take to move the "jumpers" to make the direct outs PRE fader .... and while I was in there, try to figure out why channel 5 is mis-behaving.
Getting the back off of the mixer wasn't bad, but that is where the good report card for maintenence ends!
This board is obveously an older design. The channel strips are comprised of all through-hole components mounted on a single sided board. That wouldn't really bother me so much, but it appears that power and ground for each channel strip board is provided by a pair of bare wires that traverse ALL 16 channel strips and then the wire is soldered in place on each board.
What this does is makes it so that you can't just unplug a couple of ribbon cables, remove the knobs, and pull the board out.
Has anyone delt with these before? Do you just snip the power and ground runs and pull the board out and then when you put it back together, splice the power and ground lines back together?
Secondly, channel 5 is acting badly. It distorts horribly with only minor input. If you put the pad on, you can get a clean signal, but not enough output. Any thoughts?
I have to imagine that the MixWiz3 was better designed for manufacturing and repair than this .... or at least I hope so for Allen&Heath's sake!
Any advice would be appreciated!