DanielTheGreat wrote: > Sorry, but a replacement SB3 main board is not going to happen, from me > at least. Compared to reverse-engineering a single- (or even double-) > sided PCA, doing that for a multi-layer PCA is a horrendous task. It > would never repay the development cost, given the niche market it's > for. > > Even the replacement remote PCA has not/will not repay its cost (huge > PCB manufacturing setup cost for blind vias and gold finish!). The only > reason I did it was that I *had* to because I had so many non-working > remotes and didn't want to spend money on second-hand replacements that > might also be on their last legs. > > Of course, if Logitech would send me their full circuit diagrams for the > SB3 (about as likely as finding a way to turn lead into gold!), that > would make a replacement PCB a relatively simple design task, but > despite Logitech not making them anymore, for some reason they seem > reluctant to support existing users. > > Now, getting to your SB3 that frequently reboots, I have a suggestion. > Some time ago I had one of my SB3s that would occasionally reboot for no > apparent reason (not often; maybe once per month or so). I suspected a > power supply problem, and swapped the plug-pack for one from another of > my SB3s. Fixed it no more reboots. So then I put the 'suspect' power > pack on the bench and tested it seemed fine: correct voltage even > under load. > > After a bit more swapping back-and-forth and confirming that one was > reliable and the other not, I eventually noticed something different > about the DC connectors. The 'dodgy' one had the old-style 'barrel' > connector, and the reliable one had the much better 'fork-style' > connector. It then seemed only logical the barrel style has no > springiness to ensure positive contact with the centre pin of the mating > connector, and sufficient vibration will cause it to momentarily lose > contact, causing the SB3 to reboot. > > Thereafter I went round ALL my devices (not just SB3s) that use DC > connectors, and replaced all barrel style ones with fork-style ones. > Subsequently, I came across this YouTube video that demonstrates the > problem beautifully: > https://www.youtube.com/watch?v=2YizLzyQ2PQ > > Maybe your frequently-rebooting SB3 has one of these 'bad' connectors, > and is subject to more vibration than mine was, and thus reboots more > frequently? > > Daniel
@danielthegreat I know this is an old thread, but I found the video and info on barrel and fork connector very interesting. Before watching the video I would have said everything in my house is a barrel. But after looking at some they are in fact fork and I never noticed it. ------------------------------------------------------------------------ bengaldave's Profile: http://forums.slimdevices.com/member.php?userid=4605 View this thread: http://forums.slimdevices.com/showthread.php?t=109016
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