Pinecil Broken?
12-31-2020, 03:34 AM
The picture that didn't upload correctly
![[Image: thumbnail?authuser=0&sz=w640&id=1S2-MfsJ...FBLiM7zQc5]](https://drive.google.com/thumbnail?authuser=0&sz=w640&id=1S2-MfsJ1bWqdHaFkLEPkdNFBLiM7zQc5)
So I remove the FUSB302MPX with hot air station, before that I removed every solder I can with solder wick.
![[Image: thumbnail?authuser=0&sz=w640&id=15Rt-rwB...fPkmOwRBZt]](https://drive.google.com/thumbnail?authuser=0&sz=w640&id=15Rt-rwBs-pfuS-aN-00WAdfPkmOwRBZt)
I think it was glued to the pcb so it was difficult to remove, I had to melt it basically. It turn ok after cleaning
After that no more "shortcut" between 3v3 and gnd.
I salvage the 3v3 regulator from the breakout board and solder it on the pinecil.
Now It work like the other, same current 10-20 mA when idle, same voltage on screen.
I can plug usb, but I will use it with barrel jack for the moment.
I will try to solder back a new fusb and other regulator if I can find one.
Still I do not know what happened, if 3v3 failed it should have fried the microcontroller and the bma223 but both are working.
best bet is a bad FUSB from beginning.
So I remove the FUSB302MPX with hot air station, before that I removed every solder I can with solder wick.
I think it was glued to the pcb so it was difficult to remove, I had to melt it basically. It turn ok after cleaning
After that no more "shortcut" between 3v3 and gnd.
I salvage the 3v3 regulator from the breakout board and solder it on the pinecil.
Now It work like the other, same current 10-20 mA when idle, same voltage on screen.
I can plug usb, but I will use it with barrel jack for the moment.
I will try to solder back a new fusb and other regulator if I can find one.
Still I do not know what happened, if 3v3 failed it should have fried the microcontroller and the bma223 but both are working.
best bet is a bad FUSB from beginning.
