Just coming here to say thanks for the schematic. Fixed my SB3 yesterday. Both channels were down. I'd been using it with a DAC for ages and hadn't noticed. On a whim I'd decided to compare to the built in DAC and that's how I found the issue. Probably some kind of OCD kicked in and I couldn't leave it broken even though I normally use the S/PDIF out!
Firstly I replaced C16/C20 (10uF Elna Silmic II) but fitted them the opposite way to the polarity markings on the board (and the originals). I checked the output via the headphone socket and all was now good. When I reassembled it I was dismayed to find the lineout was still bad on the right channel even though the headphone output was now fine! C23, the coupling cap between the opamp output and the jack, was also bad... Took it apart again, replaced C21/C23 (again Elna Silmic II but 47uF instead of 10uF). I can understand C16/C20 going bad as they were fitted back-to-front, but I don't see why C23 would go bad. This makes me worry about the longevity of the other caps on the board... I also took the advice of Martin Clark (not for the first time) and changed C15 from 1uF to 100uF (I used a Panasonic FM for this). http://www.pinkfishmedia.net/forum/showpost.php?p=571002&postcount=1 All working good and sounding great! ------------------------------------------------------------------------ Glenn2's Profile: http://forums.slimdevices.com/member.php?userid=19286 View this thread: http://forums.slimdevices.com/showthread.php?t=71914 _______________________________________________ diy mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/diy
