[sdiy] RE: Polysix does not save settings

[Anderson, Robert O]

From: Michael Buchstaller [mailto:buchi at takeonetech.de]

The line D1 coming from the KLM367 board is also low.
I suspect IC31 on that board - will  verify later !

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I've fixed a couple of Polysixs and they both had bad
data lines coming out of U31.  One also had a bad memory 
chip.  One thing I noticed is that if for example data line 1
is bad then every other button goes bad since they are multiplexed
off of the data buss.  Malfunctioning patch buttons that have a 
systematic pattern are a good telltale sign that the data lines 
from U31 may be fried.

Bob A