[sdiy] OB-8 Battery Replacement/OB-8 ECOs Online?

[Doug Terrebonne]

Cool, glad to have them back! I'm trying to troubleshoot my own OB-8 right now
(randomly resets itself, 2 voices won't tune, some buttons not working, etc)...

Anyway to the guy who needs to replace the battery - read this first -
http://rubidium.dyndns.org/~magnus/synths/companies/oberheim/ECO425.jpg

Doug

--- Magnus Danielson <cfmd at bredband.net> wrote:

> From: Doug Terrebonne <dougt55 at yahoo.com>
> Subject: Re: [sdiy] OB-8 Battery Replacement/OB-8 ECOs Online?
> Date: Sat, 29 Jan 2005 00:28:52 -0800 (PST)
> Message-ID: <20050129082852.37888.qmail at web81208.mail.yahoo.com>
> 
> Doug,
> 
> > If you have ROM version A6 or later I *think* the envelope cals are stored
> to
> > tape when you do a backup... Does any one have the OB-8 ECO docs online?
> The
> > links on Magnus' site are all dead... 
> 
> I've been out of disc so I didn't bring them on my server. If you try now
> (make
> sure to reload the page, the links have changed) you will find all the ECOs
> that I've got online!
> 
> I'm getting out of town over the weekend, so I will probably not be able to
> answer any emails again until tomorrow evening (late CET). Enjoy the ECOs.
> 
> If you got any EPROM version other that A8 and B5, please let me know. I
> would
> become happy to have an image of them, so I can put it on the server.
> 
> As for the issue of changing battery. You do want to read the service manual
> http://rubidium.dyndns.org/~magnus/synths/companies/oberheim/
> and there you have all the necessary details on how to *create* the data.
> You can do tape backup, but every once in a while you may want to tune it up
> from bottom anyway, and it doesn't take that much time. Beware that the
> filter
> tuning should be done in the upper end of the keyboard rather than the lower.
> The highest note should be played for offset and an octave down for the
> scale.
> I don't think there is anything in the manuals about this. Maybe Tony and
> Jürgen have any more info to share on this?
> 
> PS. I had this optical distorsion on my labbench yesterday:
> http://rubidium.dyndns.org/~magnus/synths/temp/whatda.jpg
> 
> Cheers,
> Magnus
> 
> > Doug
> > 
> > --- doof <doof at cox.net> wrote:
> > 
> > > Greetings all,
> > > 
> > > I need to replace an aging battery in my OB-8, has anyone carried out
> this
> > > procedure before?  I assumed it would be an easy swap until I read
> somewhere
> > > on the web that system calibrations (particularly envelopes) are stored
> in
> > > memory- is this correct?
> > > 
> > > Has anyone carried out this procedure?  Tips and advice would be great,
> tia.
> > 
>