Xpantastic!

Greetings!  M.J.B. from Analogue Heaven informed me of this group.

My dream of owning the awesome Oberheim Xpander has finally come true
but the unit has a problem with one of the voices.  I have uploaded a
small mp3 that illustrates the problem. 

http://www.savefile.com/files/426157

Thanks for any help.  The self tests for VCOS PW RES VCF & VCA all pass.

My favorite quote from the manual:
"We've put twice the computing power of an IBM PC inside the Xpander,
but even so it can only count so fast!"

Best,
Andy

Hi,

You could try and change the position of the CEM3374 chips one by one 
to see, if and whichof the the chips is broken. If the non-working 
voice is despite changing the chips always in the same position, then 
something else must be broken.

Before anything do a factory reset and run all the other tests. I think 
there are some more in the Service Manual.

Good luck!
Tiitu

Can't listen to your audio file at this point but I'm wondering if
we're not having the same problem.  Basically, my XP is behaving as
though it has a "stuck note".  Even after being powered down,
retuning, resetting, etc.

Any thoughts??  THANKS!!

Dylan

Hi,

Could it be that your MIDI keyboard is sending a note? This happened to 
me and was solved by changing the MIDI settings of the keyboard.