Hi all,
I finally got around to doing the unity gain mod as described on Scott
Juskiw's site:
http://www.tellun.com/motm/mods/motm830/motm830.html After replacing the resistors, I spent a good hour+ troubleshooting an
oscillation that was being output from the OUT1 jack. I didn't find any solder
splashes, or anything else physically wrong, so I reinstalled the original
resistor at R18 (100K). The oscillation problem went away, but so did unity gain
increase from inputs 4, 5, and 6 to OUT1.
So, any ideas what might be the cause of this problem? Do I have a bad
OP285, or is will changing the value of C1 help?
Thanks for any ideas,
Andrew Sanchez