Another sudden Pinecil death
#1
I received a pinecil from the latest batch today - sadly it only worked 2 times - once plugged into 20v via DC jack. The other time in a QC3 usb-c socket with a negotiated voltage of 15v.


During heating of a D24 TS-100 tip 8.Ohm@15V via usb-c the OLED screen froze and the buttons became unresponsive. After unplugging and reconnecting the pinecil the screen stayed off. The DFU mode also does not trigger. The pinecil does not show up as a USB device.

Further investigation resulted in the following: the pinecil when supplied with power via USB-c will consume about 120mA. A visual inspection of the pinecils board does not show any obvious damage or soldering faults.  The DC-DC converter (U8) on the board gets hot. The 3v3 regulator (U5) also gets hot. The 5v rail voltage is at ~4.0v. The 3.3v rail appears to be shorted to ground.

A cracked smd cap would explain this short very handily and this matches the accounts of a couple of other posts i saw in here. I already made a ticket in the pine64 system.
  Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Dead short on the power input of the Pinecil m42uko 7 1,158 04-05-2021, 02:25 PM
Last Post: tllim
  Pinecil Troubleshooting dlegs 0 156 04-04-2021, 09:18 PM
Last Post: dlegs
Video Pinecil power cycling MarMed 0 121 04-04-2021, 06:17 PM
Last Post: MarMed
  Pinecil rattle? Timpanogos Slim 2 597 03-26-2021, 01:10 AM
Last Post: Haulien
  Screen is blank on pinecil - did I kill it? ch5richards 0 316 03-12-2021, 11:31 AM
Last Post: ch5richards
Big Grin Automate checking whether the Pinecil is still in stock Julius_GU 4 1,230 02-19-2021, 02:43 PM
Last Post: neil_swann80
Exclamation Where can i get spare parts for a damaged Pinecil? y2ktibltd 0 420 02-13-2021, 01:54 PM
Last Post: y2ktibltd
  Dead pinecil joelspangler 3 654 02-12-2021, 06:40 AM
Last Post: zer0sig
  Asus laptop power supply can also power Pinecil biketool 0 329 02-12-2021, 04:33 AM
Last Post: biketool
  DOA Pinecil? foobarney 7 1,039 02-10-2021, 05:28 PM
Last Post: foobarney

Forum Jump:


Users browsing this thread: 1 Guest(s)