DanielTheGreat wrote: > Oh boy, that's going to take some time, sourcing 23 SMD electros that > are drop-in replacements (physically + electrically) for all those on > the main SB3 PCA. The two THD caps will be easier. I might hook a 0R1 > non-inductive resistor in series with the external supply first, and > monitor the R's voltage with a DSO in peak-detect mode, to see if > current spikes are indeed a symptom.
I understand, but, from my experience it's a 100% proven cause on 4 SB3 that had this symptom (I saved 3 but on one I stupidly damaged was the CPU, but I still fixed the MB and verified it). One tip: because removing capacitor can be done using the "twisting method", it takes literally 5 minutes to remove them. I think you likely can take a pass on the 63V which is for the VFD, then you can replace the set close to the DC/DC, then the set close to the DAC if it still does not work. I use solder paste, put the capacitors back one by one, hold them with a plier, solder one leg pretty hot (300°C) to make it quick and handle the thermal capacity of the ground plane connected ones, then move to next one. Each capacitor is a 2 minutes job, so it's 1 hour in total. You might easily spend more time in investigation, unfortunately LMS 7.7, 7.8 and 7.9 - 5xRadio, 3xBoom, 4xDuet, 1xTouch, 1 SB2. Sonos PLAY:3, PLAY:5, Marantz NR1603, JBL OnBeat, XBoxOne, XBMC, Foobar2000, ShairPortW, JRiver 21, 2xChromecast Audio, Chromecast v1 and v2, , Pi B3, B2, Pi B+, 2xPi A+, Odroid-C1, Odroid-C2, Cubie2, Yamaha WX-010, AppleTV 4, Airport Express, GGMM E5 ------------------------------------------------------------------------ philippe_44's Profile: http://forums.slimdevices.com/member.php?userid=17261 View this thread: http://forums.slimdevices.com/showthread.php?t=107412
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