[sdiy] PPG Wave EVU information?

[Pete Hartman]

Then of course there's the old "doesn't work because you ignored the
220V marking on the power jack" trick.  Didn't trust the marking, but
checking the transformer shows definitely under voltage when plugged
into 110 :/.

Going to scramble and see if any of my old 220 outlets are still functional....





On Tue, Mar 11, 2014 at 10:44 PM, Pete Hartman <pete.hartman at gmail.com> wrote:
> I have dumped myself into the deep end on a project....
>
> I was asked "can you look at the MIDI on my EVU, which has a refit in
> it?" and said yes.
>
> The MIDI was a mess; wrong resistor values, broken connections, I
> broke a pin on a weird socket extension and had to rebuild that, etc.
>
> I have that all sorted, I think (No MIDI Thru as currently wired, but
> I'll be taking care of that soon enough).  So I figured I would turn
> it on and see whether it appears to work.
>
> All I get is a hum.  First power on it pops a bit and then settles at
> a low level.
>
> As I dig around in the documentation I can find about this beast I
> realize there are a number of possible causes.  1) the MIDI still
> isn't wired right and is interfering with functionality, 2) I managed
> to break something, 3) it wasn't working when I got it (kicking myself
> over not testing it before touching the insides).
>
> 3 breaks down further into a) something wrong with the electronics, b)
> it doesn't have the right OS installed to use the MIDI and that's
> causing issues.  I'm sure there are a number of variations on all
> these that are less obvious.
>
> Anyone have any good resources for this?    I've found various Wave
> 2.2 and 2.3 manuals, but it appears some interpolation is necessary to
> apply them to the EVU, and I have been unable so far to find an EVU
> specific service manual.
>
> Thanks
>
> Pete