Hello there,
My switch had a shorted BQ and a blown usb fuse. I replaced them and now turns on correctly. However, if I plug a USB cable it turns off immediately. I measured and it correctly negotiates 15V (I assume the PI3USB must be working?) but doesnt seem to pull any current since it doesnt charge. Doesnt matter if I plug it while off, no charge.
What could be the issue? Should i suspect the BQ? Seems like it should be ok since it is new, but who knows… The fuse did not blow again and this turnoff issue is 100% reproducible every time I plug it. I aslo tried plugging it to a 5V usb source and it doesnt turn off but doesnt charge.
A bit of backstory: found the device off one day. Wouldn’t charge nor turn on. Found a dead battery (0V) and burnt usb fuse. A new battery showed that BQ would heat up like crazy, so it was shorted. Replaced them and now stuck in this situaton. Im tenpted to replace the MT and PI3USB…
Thanks!