Re: new member with tuning problems
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That's great to hear! ?(I'll wager U814 was the problem, since the failures were in specific CV categories across all voices.)
Regarding the new problem, perhaps the new IC's are simply revealing a different preexisting condition. ?Since the fails are voice specific, it's unlikely to be anything in the U8xx or U9xx block, but something in the per-voice section of the board. ?This is when Karl usually points to possible electrolytic capacitor failure around the voices (and the record shows he's often correct!) ?Probably worth poking around the older messages on the forum for other ideas too. ?(re-seating/cleaning ICs, replacing caps, swapping ICs across voices to narrow down the culprit... etc.) On firmware: In the "Files" section of this forum, there's an ancient text doc of Oberheim's official release notes for the firmware releases.?It's a good read, with the hardware criteria for updating, and all of the otherwise undocumented features in the latest versions. ?Keep in mind, there are two firmwares to keep track of: the main processor, and the voice processor. ?The final versions were 1.2 (main) and 1.4 (voice). ?Since you're still running 1.0 ("Main", I presume), ?you have much to gain by upgrading both. There's usually someone on eBay or Reverb selling them... The doc is here:?/g/xpantastic/files/Documents/Xpander_OS%20Update.zip (It's a zipped archive of text and Word doc versions of the same info, very 90's! ?Maybe a moderator could replace it with just the unzipped text version...) |
r1n9o