post #196 of 1144
1/28/10 at 11:37am
|Mike, changing non critical resistors is something that has on the whole not been investigated with these dacs, so I, for one, will be very interested what you find there.
Be aware that the little tantalum smd caps have a dark brown strip that indicates the positive end, its counter intuitive its looks like the negative.
The digital boards on the Chameleon are more tightly packed to reduce trace length so keeping the replacement cap legs short is the way to go.
The inductors in the low level filter are bypassed if you lift one leg of each those filter caps anyway, if you haven’t already tried that, I would. All of us who have, found great benefit from this, and if it doesn’t work for you just resolder the legs.
A lot of changes there so try to make mental notes of changes in SQ as you go. I always regret when I steam in and change everything at once and then not know what change had the most benefit, or indeed what change made things worse.
I've never soldered Thru-hole caps on SMD pads, it seems wrong, I'll find out soon enough.