Dear all users of the vintagesynthforum, and especially Oberheim Xpander users.
I have a unbearable problem with a recent bought Oberheim Xpander, Japanese version.
So, 3 months ago I bought a XP-1 from a japanese ebay-seller for a huge amount of money (at least for me) - In the sellers announcement it said "US", "Professionally Serviced", so i thought, this it the one, and I clicked and bought.
Sadly though, when it came here to Denmark, some weeks after, it had the infamous "Voice Processor Malfunction", which leaves the synth muted, and unplayable. Upon opening the unit, i found out that this is one a japanese versions, though not a late one, as it was produced in 1986.
After hours of noodling around, ressetting (clearbutton+swith power on operation) frustrations and so, I tried to change the 40p ribbon cable, which connects the two processors, as my research deep in old internet fora's had told me that something between the 2 processor blocks for the communication between them. And it didn't work any better, though sometimes it feld like, that that was the problem.
The unit is extremely unreliable, but powers up as it should, and sometimes, almost out of nothing, the unit works, or at least for 10 minutes or so, until a new "Voice Processor Malfunction" occurs. When the unit works, it can easily autotune itself, and all functions work flawless.
The unit has not been professionally serviced, or re-capped ever (though the seller told me so) and since this is also something i have found in a lot of the older entries on different forums, this might be something I would have my tech do.
Has anybody here experienced something like this?
Has it somthing to do with the IC between the processors, or the processor itelf maybe?
It seems like the digital connection between the two processors is very buggy, and I simply don't know how to repair it.
By the way, the sellers ebayname is "awakewalk", and has as I write 3 XP-1 for sale on ebay, interestingly with the same pictures as on my unit. Bad buisness, very very bad actually!
Help will be greatly appriciated, as this in many ways, was a dream-come-true-buy, and now, I am just very frustrated and unhappy, having used so much money, and time on something that doesn't work.
All the best, Peter Kohlmetz Møller.