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Lenovo PhonesK8 [XT1902] Smartphones
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05-28-2020

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Lenovo k8 note switched off automatically

2020-05-28, 13:19 PM
I have faced same issue. At last I have short circuited battery fuse. Now it is working fine
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05-29-2020

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Lenovo k8 note switched off automatically

2020-05-29, 3:41 AM
How did you do that??
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5 Posts

05-28-2020

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Lenovo k8 note switched off automatically

2020-05-30, 18:33 PM
There is a small fuse in the battery, which I removed and soldered the two legs together. Now it is working fine.
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5 Posts

05-28-2020

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Re:K8 Note Switch off Automatically

2020-05-31, 6:45 AM
Hi I have also faced the same problem with my lenovo K8 note. It's working when charging the phone and got switched off when removed the charger. It means there is no issue with phone hardware. So it is related to phone battery power pack. Then I thought it is battery issue so I thought to replace the battery. I have removed the battery and checked with multimetre and found that battery is fine. Then I have continued my testing to find where the fault is. At last I have figured out the problem. Lenovo K8 note uses Lenovo BL 260 Li Ion battery. To protect the battery from over discharge/current a PTC fuse installed in the battery strip. This fuse open when mobile draws more current than rated. And the fuse reset automatically after over current removed. This cause auto switch off probelm. When you try to open some app mobile hardware work more and take more current if it exceeds fuse rating it will trip and mobile got switched off. So this leads to two possible scenarios 1. The PTC fuse is faulty. If PTC fuse is faulty then you can simply replace the battery will solve the issue. 2. PTC fuse is fine but Lenovo mobile hardware takes more than rated current. Then it is a hardware or software issue. Lenovo team need to investigate and figure out what exactly cause the excess battery usage. Note. For my case case I know how PTC fuse is working and other power pack related safety things. So I have removed the fuse and soldered together the legs and it is working fine. But I will not recommend this as it involve safety issue. So don't do that and be safe.
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05-28-2020

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Re:K8 Note Switch off Automatically

2020-05-31, 6:55 AM
Sorry In my reply I have wrongly type as BL 260 battery, it is Lenovo BL270 Li Ion battery.
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2 Posts

12-07-2018

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Re:K8 Note Switch off Automatically

2020-06-18, 12:14 PM
My phone got switch off automatically when not connected to charger I am facing this issue past 5 days I did factory reset to stop this but it was unsuccessful
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06-23-2020

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K8 phone switches off automatically when notification or any sound comes

2020-06-23, 16:56 PM
My phone keeps switching off the moment any notification or any sound is played. Also the audio is crackling and switches off the phone. The battery also quickly drains. Phone gets overheated as well. Sometimes it works without any of the problems mentioned above, however looking forward for help to fix the above issues.
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1 Posts

06-24-2020

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Re:K8 phone switches off automatically when notification or any sound comes

2020-06-24, 16:55 PM
Same problem with my lenovo k8 note What should I do??
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1 Posts

07-03-2020

IN

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  • Message 149 of 149

Re:K8 Note Switch off Automatically

2020-07-03, 19:08 PM

I bought Lenovo K8 Note 2 years ago. Few weeks ago, it started to get turn off suddenly by itself. Initially it happened once in 2-3 days.

 

Then it happened more frequently about 1 or 2 times daily. I figured it out that when the phone is in charging state, it never turned off. It only happened when it is not in charging.

 

Then it happened more frequently, about 10 to 15 times a day. At that time when I turned it On again, just as the lock screen appears it again turns Off. Then I tried to put it under charging while turning on. It worked. But when I remove it from charging, within few minutes it gets turned off suddenly. 

 

Now the situation has got worst. Now my phone is like a PC, only works when it is Plugged in. If I remove it from charging, only a single touch on screen and it gets Off suddenly. To turn it On again, Even when it is in charging it gets turn On after 4-5 attempts.

 

I had done Hard Reset many times to solve this, but it didn't worked.

 

Lenovo Care, can you please tell me the exact cause why this is happening. Is it a battery issue or something wrong with the motherboard. It seems like I am using a PC of the size of a smartphone, works until it is connected with charger.

 

 

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