The switcher is the small square IC next to the power connector, which has no legs. The inductor is the large-ish cylindrical component next to it. A new hardware revision of the IOIO will roll out very soon, which addresses this issue. Until then, the advice is to not power the IOIO with more than 10V.
On Fri, Nov 13, 2015 at 9:25 AM, <[email protected]> wrote: > 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]> >> 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]. >>> 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. >>> >> >> -- > 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. > -- 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.
