On Tue, Mar 31, 2015 at 01:46:40PM -0500, Chris Caudle wrote: > On Tue, March 31, 2015 12:36 pm, Patrick Shirkey wrote: > > That person might not have much money but they might have the time to > > figure out where the buzz comes from and do something productive. Who > > knows they might even be able to provide useful feedback to Behringer that > > improves their Linux solutions. > > > > Sounds like everything else on the board was working ok so a little bit of > > hum should be relatively easy to solve. Maybe it just needs some contact > > spray. > > That type of problem is indicative of poor circuit reference conductor > routing (colloquially called "ground loop" or "pin 1 problem") and can > sometimes be improved with judicious use of added wire or copper foil tape > connections, but often requires a new and proper PCB layout to correct. > It is basically just sloppy layout work by the design team. Right. And in cheap mixers like this one, everything including connectors, pots and switches will be on a single PCB, and there's no way to change anything much unless you decide to drill some holes in it. And BTW, it was not 'a little bit of hum' but a ot of it, and new equipment should't need contact spray (and it won't help for this kind of problem either). Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
