[sdiy] PPG Wave EVU information?

Paul Maddox yo at VacoLoco.net
Wed Mar 12 22:19:27 CET 2014


Peter,

  check http://www.ppg.synth.net/
The EVU is basically a 2.3 without LCD and keyboard, there's very little 
difference inside (same CPU card, PROZ board and filter cards).

  If you get stuck any further, drop me a mail off list and I'll see 
what I can do to help.

Paul

On 12/03/2014 04:06, Pete Hartman wrote:
> 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
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