post #601 of 613
10/24/09 at 5:34pm
Yep - IC1 needed a bit more solder. The dac is now working but producing a fairly audible buzzing. Could this be attributable to interference? I haven't yet cased it.
Also, for anyone starting out, I found upgrading from the Weller SP23 to the WCL100 to be a great help
(Thanks to tomb for your assistance and the website; I've been enjoying my MM amp for quite a while now.)
|One trick many people use is to hold the board up to a very bright light or directly next to a light bulb. The fiberglass PCB is translucent enough that you can see through the solder joints for any bridges or un-soldered joints.|
I was moving along pretty well putting together my first Bantam DAC and now find myself tripped up just before the end. My USB connections are straight to the board and the cable looks really nice coming out one side of the case. But, I’m not sure about the RCA 3.5mm connections. I would like both RCA cables to come of the other end of the case and terminate in male connections that I can plug directly into my MiniMAX. On the quality cables I bought for this, there is a solid silver wire in the center and many strands of thin copper wire wrapped around a sheath that surrounds the center wire. I’m assuming this is what I should use to make the ground connection. HOWEVER, when I collect all of these copper strands and twist them together into a straight piece, the result is too fat to fit into the ground connection on the DAC board. So, first of all, am I right about these copper strands being the ground? If so, how can I deal with the fact that when twisted they don’t go through the hole? Am I using the wrong cable? Can I solder a wire to this twisted strand and connect that to the ground? I would really like to avoid mounting female connectors on the side of the case and then plugging male connectors into that from the outside. Thanks in advance for any help with this.