Okay, my problem is solved. Note to self: Never misread mod info to read
49.9 ohms when it really reads 49.9K ohms. Zoinks! Thanks to Larry Hendry for
helping me out.
Over and out,
Andrew
In a message dated 9/11/04 9:34:29 PM Central Daylight Time,
ixqy@... writes:
> 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?
>