[sdiy] Oberheim OBXA issues

[al spitzley]

Apologies for the term “guru”. Hopefully “experienced synth tech” is better…


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On Wednesday, May 11, 2022, 1:27 PM, al spitzley <kogz23 at yahoo.com> wrote:

Ha!


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On Wednesday, May 11, 2022, 1:20 PM, gm via Synth-diy <synth-diy at synth-diy.org> wrote:

 I'm not a guru (but I play one on TV).  I installed a new ROM chip.
 ~GMM
 
 On 5/11/2022 12:39 PM, Florian Anwander wrote:
  
Hello Al 
 
 do you know, whether your "synth guru" reprogrammed the original eprom chip, or whether he replaced the chip with NOS? 
 
 Florian 
 
 
 Am 11.05.22 um 17:42 schrieb al spitzley via Synth-diy: 
 
So the Oberheim is now up and running thanks to my local synth guru! The imain ssues were one corrupt eprom and a wrong part was installed in the lower control board. Don't  know how I didn't notice the latter! 
 So now I'm trying to get the old JL Cooper midi interface to work. It arrived outside of the synth with no cover on the eprom window. I assume it had been exposed for a few years so suspect this could be a cause of the interface not working. It is a Rev 1.1 board. A long shot I know, but does anyone have a bin file for the JL Cooper Obxa midi board? 
 Thanks in advance and also thanks for all the prior help! 
 
 
 
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