[sdiy] Poly 61 near death?

[Bob Weigel]

Hey Joseph,

We are in sync here. I just got a couple of them cheap off an auction.  
The first one had a battery leak that actually took out a trace.  You 
have to scrub everything clean with alcohol or maybe there's a better 
solvent for the battery acid..I dunno. ANyone?  However I got it with 
swabs and alcohol to where it was pretty clean.  Then I 'scale' the 
surface of the traces that have begun to rust with my xacto knife with 
the curved end.  Works pretty nice.  I found one of that fat traces 
under the battery to be the only one eaten through.  I repaired it and 
the digital stuff seems to respond fine but no sound.  Tried programming 
a sound..no dice.  ANyone know if this is like the Multi-trak?  Do you 
have to load sounds first? Anyway I just verified that the patch links 
are ok and found some more to add to my site while I was at it.  
http://cu.imt.net/~sounddoctorin if you need to find patch links. 

I need to get a battery in it.  I can't recall if these have trickle 
charge circuits and need nicads of if you can use Li batteries.  I'll 
check before I do it.  Should be same as polysix in that part of the 
circuit and I have it's diagrams here.  If you need any parts I'll be 
scrapping one really bad unit. -Bob

Joseph Palermo wrote:

> I just got a poly 61 of a friend who had It sittin in his basement. 
> Most of the keys are not working properly, they don't trigger on the 
> first hit, takes a couple, some not at all. And after being on for 
> about 5 minutes it restarts it self. I took a look under the hood and 
> noticed a large battery on the cpu board, it has a small amount of 
> leakage, bout the size of a nickle, I'm guessin I need to get it out 
> of there asap. What should I do, I know of the poly 6 battery probs, 
> is the poly 61 heading for the same fate.
>
> Thanks in advance
> E.O.J the Bum
>
>