T440S sometimes won't boot unless i detach che internal battery

T430 - T470 and T530 - T570 series specific matters only
Post Reply
Message
Author
pictux
Posts: 48
Joined: Thu Oct 04, 2007 4:33 pm
Location: Treviso, Italy

T440S sometimes won't boot unless i detach che internal battery

#1 Post by pictux » Fri May 19, 2017 9:36 am

Hi everybody.
My t440s has now this annoying problem.
Sometimes (i mean: every 2 days or so) it won't boot.
Not only, if i attach the power cord, nothing happens (usually attaching the power cord, the red led blinks 3 times).
It seems dead.

I try removing external battery, pressing the reset switch for the second (internal) battery, pressing and releasing the power on button, but without success.
The only way to resume the laptop, is opening it, and detach and reconnect the connector of the internal battery.

http://i.imgur.com/2VsRLdn.jpg

Now i'm working with the connector detached, to avoid every time the need to open the case in order to boot the laptop :)
What do you think?
Battery seems ok (the charge is the usual), and once reconnected the laptop boot without problem...

Any suggestions?
Thanks
MIrco
T440s 20AR S08Q00, T500 2082-9JG, T60 1952-CTO, R50P 1832-22G, T40 2374-PG2

Thinkpad4by3
Senior Member
Senior Member
Posts: 839
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: T440S sometimes won't boot unless i detach che internal battery

#2 Post by Thinkpad4by3 » Fri May 19, 2017 12:18 pm

Buy a new batt and try, maybe ur battery is internally shorted??
With great power comes great responsibility!

A lesson Lenovo has not cared to learn yet.

pictux
Posts: 48
Joined: Thu Oct 04, 2007 4:33 pm
Location: Treviso, Italy

Re: T440S sometimes won't boot unless i detach che internal battery

#3 Post by pictux » Sun May 21, 2017 10:30 am

Hi and thanks for the reply.
I don't think the internal battery is shorted, because after i detach & reconnect it, it's recognized correctly and it works...
Am i wrong?
Thanks
T440s 20AR S08Q00, T500 2082-9JG, T60 1952-CTO, R50P 1832-22G, T40 2374-PG2

pictux
Posts: 48
Joined: Thu Oct 04, 2007 4:33 pm
Location: Treviso, Italy

Re: T440S sometimes won't boot unless i detach che internal battery

#4 Post by pictux » Wed Jul 05, 2017 4:39 am

update: it has started with the same issue with the removable battery.
I have to remove it, press the boot button for a few seconds, and then reattach it.
Than i can boot my laptop.

As i've already said, batteries are charged when the power plug is inserted, and i've the usual power autonomy when running on batteries.
So they seem ok...

Any suggestion / tip?
Thanks,
M
T440s 20AR S08Q00, T500 2082-9JG, T60 1952-CTO, R50P 1832-22G, T40 2374-PG2

RealBlackStuff
Admin
Admin
Posts: 17932
Joined: Mon Sep 18, 2006 5:17 am
Location: Mt. Cobb, PA USA
Contact:

Re: T440S sometimes won't boot unless i detach che internal battery

#5 Post by RealBlackStuff » Wed Jul 05, 2017 4:52 am

Try another (more powerful) charger.
Or if you have it, use an adapter cable such as this: http://www.ebay.com/itm/361863732964 with an older 65W/90W charger.
Wild guess: maybe switch off "USB always ON" in BIOS.
Have you checked that none of your USB ports is broken?
Lovely day for a Guinness! (The Real Black Stuff)

Check out The Boardroom for Parts, Mods and Other Services.

pictux
Posts: 48
Joined: Thu Oct 04, 2007 4:33 pm
Location: Treviso, Italy

Re: T440S sometimes won't boot unless i detach che internal battery

#6 Post by pictux » Sat Jul 15, 2017 10:46 am

Hi and thanks for the reply.
I've switched off "USB always ON" in BIOS, but nothing has changed.
USB ports seem all ok (i've tried with an usb key and a mouse)-
Just curious: how'd the charger affect the computer in this way?
Thanks
T440s 20AR S08Q00, T500 2082-9JG, T60 1952-CTO, R50P 1832-22G, T40 2374-PG2

Thinkpad4by3
Senior Member
Senior Member
Posts: 839
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: T440S sometimes won't boot unless i detach che internal battery

#7 Post by Thinkpad4by3 » Sat Jul 15, 2017 3:21 pm

It would give the computer mpre power to use between charging both batteries and running the computer.
With great power comes great responsibility!

A lesson Lenovo has not cared to learn yet.

zephxiii
Posts: 14
Joined: Sun Aug 02, 2009 9:40 am
Location: New Haven, IN

Re: T440S sometimes won't boot unless i detach che internal battery

#8 Post by zephxiii » Sun Aug 20, 2017 9:51 am

At this point, I'd make sure I was on latest BIOS. I would try detaching the CMOS battery and all other power sources. If it still keeps doing it as much as I hate to say it the board could be getting flakey in that area. It could have experienced some kind of damage or moisture. The mother board in my T450 which experienced lemonade behaved in similar fashion in addition to other things like shutting off just after boot up.

The good thing is that these boards are pretty easy to replace. The bad thing is that they are a lil more costly due to CPU and RAM being soldiered on. I got my board from ebay for 200 bux.

If it's not shutting off on you or corrupting data you could probably just get by with it since it is just an annoyance.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad T430/T530 and later Series”

Who is online

Users browsing this forum: No registered users and 1 guest