04-29-2018 01:57 PM - edited 04-29-2018 02:06 PM
YES!! Fantastic - that did the trick for me THANK YOU VERY MUCH FOR THIS!!!
Do you know why/how this actually works?
This text in response to previous post
"JUST HOLD 30 SECOND POWER BOTTOM AFTER SHUT DOWN.EVERY THING WILL BE OK AFTER DO THIS PROCEDURE"
04-29-2018 03:12 PM
Yes, the 30 second trick works fairly repeatably. But telling someone to reboot their computer 5 times a day when it stops charging is not a solution! What is the real problem? Seems like some type of ground loop, but it is software related. Never had this problem until a few weeks ago, then it happened to both of my Yoga pro 3's on the same day.
08-27-2018 03:47 AM - edited 08-27-2018 03:53 AM
There is a very frequent problem with the Lenovo genuine charging cable (I have had to replace 4 in 3 years, even though I work from home so the charging cable shouldn't experience much bending cos I don't travel much).
In an earlier post on another thread, I reported that I had electrically tested a charging cable after a failure and found no continuity for the outer pins from one end to the other. I carefully cut open the insulation of a failed cable and found 2 ultra-thin copper wires and 2 thick wires within the cable and the thin wires were both broken (they consist of 8 hair-like strands each). I believe repeated bending often causes the thin wires to pull apart around the thick ones.
In turn, I suspect this often causes intermittent power spikes on the USB as the broken wires intermittently connect and disconnect. Then the laptop seems to shut itself off to protect itself. Once the laptop has shut itself off, even plugging in a new charger does nothing - no charging light, the laptop appears totally dead.
The solution in every case has been to replace the charging cable, then hold down the power button for more than 20s. The charging light should then come on and everything should be back to normal.
In the lead up to a total failure, I believe these intermittent power spikes have also caused backups to my external USB disk to fail due to excessive bus errors, which I found in the system log.
I use Ubuntu Linux (14.04 LTS, v4.4 kernel), so its possible that different symptoms appear with Windows.
The same cable is used for Lenovo Yoga 4, Yoga 3 Pro, Yoga 3 11 and Yoga 3 14. My laptop is a Yoga 3 Pro 3270.