I have exactly the same problem in 2 of my IOIO boards. If it is powered using VIN->not working. If 5-5.5v supply is connected to 5v pin. The power led will be on, but not working, and the processor gets hot. The resistance between GND and 5V is nearly 0 (compared to functioning board 1-2 MOhm). So what is the switcher to be eliminated to rescue the board ? The micro switch near USB connector ?
perjantai 13. marraskuuta 2015 9.28.17 UTC+2 Ytai kirjoitti: > > It does sound like a fried switcher, causing a low impedance path between > 5V and ground. This is likely causing your 5V rail to sag, so it might > explain why your Android won't connect. One way to hack around this problem > is to desolder the switcher or the inductor. I would first verify this > guess by measuring resistance between 5V and GND when not powered, and > expect that you'll see a low value in the few ohm or less range. > > On Thu, Nov 12, 2015 at 2:57 PM, Zvonimir Udovičić <[email protected] > <javascript:>> wrote: > >> >> >> Dana četvrtak, 12. studenoga 2015. u 17:50:08 UTC+1, korisnik Tyler >> napisao je: >>> >>> Okay, can you give us more detail? When you power the IOIO, are any of >>> the lights coming on? How are you powering the IOIO, specifically, where >>> are you applying the 5v? Finally, does any part of the IOIO board feel very >>> hot? >>> >>> >>> power lamp lights normally, i am powering ioio with 5V adapter on 5V >> pin, ioio board feels hot and vin pin is not working >> >> -- >> You received this message because you are subscribed to the Google Groups >> "ioio-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at http://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
