Thanks for your help guys. I'm going to look into some of those possibilities and get back to you all.
--- In PolySix@yahoogroups.com, "Scott" wrote:
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>
>
> --- In PolySix@yahoogroups.com, "ammerman.sean" wrote:
> >
> > Hey everyone, I have a Polysix that that is experiencing patch memory problems. It was bumped a little too hard during a gig. I don't know if this is what caused the malfunction or not. Anyway, here's the specific issue:
> >
> > When you turn the keyboard on, bank "D" and program "4" are automatically selected. Originally, bank "A" and program "1" would be illuminated when you turned it on.
> >
> > When you select other banks and programs, the buttons for "D" and "4" always stay illuminated. So if you choose another bank, it will be illuminated along with "D." The same goes for when you choose another program -- "4" always stays lit. To get a better idea of what I mean, check out a pic: http://seanammerman.wordpress.com/?attachment_id=445
> >
> > Program button "8" does not work and will not illuminate when you press it.
> >
> > The keyboard powers up and produces sound; however, all my saved patches are gone. The current sounds are a bit harsh and generic, but they are somewhat "musical." After selecting the "manual" patch, you can edit and create new sounds like usual. It seems that all the effects/MG/VCO etc. are working fine.
> >
> > Unfortunately, the keyboard will no longer save any of my "found" patches. I tried to load patches that I saved to a cassette, but this does not work either. Remember, bank "D" and program "4" always stay selected. "D" is also the error/cancel indicator for the tape enable.
> >
> > I disconnected the The KLM-371 board and it looks OK to me. Here's a few pics:
> > http://seanammerman.wordpress.com/?attachment_id=451
> > http://seanammerman.wordpress.com/?attachment_id=452
> > http://seanammerman.wordpress.com/?attachment_id=453
> >
> > I took it to a local keyboard repair tech, but he wasn't experienced with analog/vintage synths. He was able to determine that the battery(which has been replaced) was working fine. To my eyes, I don't see any corrosion from leakage.
> >
> > Does anyone have any idea what's causing the issue? I appreciate any help, advice or thoughts. I am a bit of an amateur, but I love this thing and would hate to see it go.
> >
> Hi...
>
> Does the Poly exhibit the same problems with the circuit board OUT of the panel>?...If not , it could be an alignment/button issue. If it's still weird then you'll have to consider having the pc boards looked at on the TRACE or circuit side. One broken copper etch could screw things up.Have someone "techie" look for hairline cracks in the circuit traces.
> Also, one by one, pull all of the multipin connectors and re-seat them
> See if that helps or not. These units DO have some years behind them and oxide get into the weirdest places.
>
> I just finished going "through" an ARP AXXE, a Juno 60 and a TR-808.
>
> They're all fine now and going home tomorrow
>