Patches and discussion for Ensoniq VFX family

Hey Rich,

Ok I'm new to the SD-1 but not synthesis.  I wanted to bring up a few ideas
other than ripping the board apart.
Ok, recently I had a sequence created.  Half of it plays fine however the
second half tunes up.  It was controlling
my sampler so I thought I had accidently de-tuned the sample bank but that
wasn't it.  Not knowing the SD-1 very
well.  I "somehow" managed to assign a data cartridge sound to a sample
track.  How this was possible considering
I don't have a cartridge, I'll never know, but none the less it gave me an
oddly named sound on that track.  Apparently
it confused the keyboard and it wigged out.  I had to redo the sequence.
Simply deleting and/or reassigning the track
didn't work.

Next, and I know this is incredibly obvious, but did you somehow manage to
record pitch wheel data and didn't know it?
I had also done this - didn't even know I bumped my mod wheel and recorded
the data on a track I thought was clean.

Third, can you repair the sequences by pitching up or down each track to
even it out?  I mean it's a quick fix but if you're in
a hurry it might help.

From the little I know, if something like this happens so consistantly it's
usually user error.  Computers screw up but never
in a very consistant manner.  Usually the problem will get worse or
magically dissapear - go figure.

Also, is there any way you can get the sequence to one of us - I don't know
how you could do that - and have one of us
check it out on our SD-1?  That should identify the problem pretty quick. I
mean if it would do it on one of our boards
then it's not the machine, it's the sequence.

I feel your pain.  Let me know if I can help.

Michael

----- Original Message -----
From: "homebythe_sea" <homebythe_sea@...>
To: <Ensoniq-VFX-SD@yahoogroups.com>
Sent: Tuesday, October 19, 2004 9:59 AM
Subject: [Ensoniq-VFX-SD] SD1 TUNE AND PARAMETER PROBLEMS


>
>
> Hi,
>
> Problem:
>
> A. keyboard going out of tune, both on internal sounds AND when I
> use the SD to act as a controller, it detunes the sound module as
> well.
>
> B. I notice that when im in a page that has parameters (master, Midi
> etc...) the values for the underlined value change by them selves .
>
> Referring to Service Bulletin 12
> I took it all apart and found:
>
> 1. Eprom KPC 2.32 520c
> 2. Foamless keyboard with reference coil
> 3. 20 pin connector between the two boards
> 4. the 20 pins are joined by two small ribbon cables all soldered.
>
>
> Heres what i did so far:
> 1. Opened keyboard top cover, removed the 10 screws from the bottom
> of the keyboard, removed the keyboard assy, also removed the
> floppy/pitch/mod wheel cover to get access.
>
> 2. Using a continuity tester, I tested each pin on the 20 pin
> wiring, side to side, I had continuity
>
> 3. disassembled pitch bend and mod wheel sliders and sprayed out the
> pots with contact cleaner.
>
> 4. Lithium battery- put a volt meter on it and it read 3.20 volts
> 5. detached display and button circuit board (the one under the
> display) and cleaned out the volume and data slider pots with
> contact cleaner
>
>
> Problems I encountered:
>
> 1. When removing the display circuit board, I had to take off the
> volume and data slider covers, when I did, the volume slider bar
> came out of the assembly, cant seem to get it back in. Do I need to
> replace the whole slider or can i get the metal tab back in?
>
> 2. When checking the battery, I noticed that the metal tabs that the
> battery attaches to the board can be "rocked" (moved a bit from side
> to side.  Could the solder connection be intermittent and causing
> the problem? Can the tabs be soldered with out removing that main
> board? (this is the board that has all the inputs on it, and I would
> have to unscrew all the inputs to get it out)
>
>
> Im going to reassemble it now and test. If any of you have
> suggestions PLEASE help !!! :))
>
> Thanks to Richard at Route 66 studios for the service bulletin,
> advice, AND the courage to do this job myself !!!
>
> Rich G
> Freehold NJ
>
> PS, I have a gig coming up on Saturday, and need to fix this or get
> another keyboard, if any of you are in NJ, please contact me if you
> can loan me a board, or if you have something inexpensive to sell
> that can do brass, strings, organ etc...:)
>
>
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>
> Yahoo! Groups Links
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