FW: EDP goes down during live performance -- is this still happening w/ V.5 software?

[David Kirkdorffer <DKirkdorffer@exapps.com>]

Pat - 

I hope you're still manning the Oberheim information help desk.   Here's
question you may be able to help answer for us EDP people.

The question is if / when a fix was instituted to the EDP hardware to
fix what has been known as The Thermal Problem. The fix had to do with
cutting a pin -- pin 5 of U12, an ADC0804

David 


-----Original Message-----
From:   Kim Flint [SMTP:kflint@chromatic.com]
Sent:   Monday, February 23, 1998 8:55 PM
To:     Loopers-Delight@annihilist.com
Subject:        RE: EDP goes down during live performance-is this still
happening w/ V.5 software?

At 08:21 PM 2/23/98 -0500, David Myers wrote:
                >>At 06:18 PM 2/23/98 -0500, David Kirkdorffer wrote:
                        >>>With the older version of the EDP software,
the "much reported on these
                        >>>pages 'thermal problem'" plagued the EDP with
sudden silence if you used
                        >>>the undo button.
                        >>>
                        >>>Should I still worry about this if I have the
new Upgrade software, but
                        >>>have not "cut the pin"?
                >>
                >>that has nothing to do with the software. Pure
hardware issue....I'd highly
                >>advise the ol' pin cut manuever if you have an older
unit and this hasn't
                >>been done yet.
                >>
                >>kim
        >
        >Kim-what exactly is an "older unit", anyway?  Do you have
serial numbers
        >or something?

I do my best not to keep track of such things. If you really want to be
certain if your's has been properly modified or not, pop the top off and
take a look at the chip in question. There's a nice diagram on the
Looper's Delight site on one of the echoplex pages that shows exactly
where to look.  (pin 5 of U12, an ADC0804)  You can do the mod yourself,
assuming you are reasonably able with electronics. You just need a
decent tool to get in there and cut the pin off. (judging by your past
electrical gear butchery, i'm sure you can manage! :-) )  
Oh, that's a void the warranty do it at your own risk sorta thing, so if
anything bad happens, don't look at me! I'm sure you can get Oberheim or
some authorized service place to do it too, if that makes ya happy. 
As far as I know, this has been taken care of on new units at the
factory for the past year and a half at least. But I really don't have
any way to know about things like that for sure.
kim
_______________________________________________________
Kim Flint                       408-752-9284
Mpact Systems Engineering       kflint@chromatic.com
Chromatic Research              http://www.chromatic.com