Welcome to our peer-to-peer forums, where owners help owners. Need help now? Visit eSupport here.

English Community

ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
All Forum Topics
Options

20 Posts

01-31-2014

Devon, UK

45 Signins

278 Page Views

  • Posts: 20
  • Registered: ‎01-31-2014
  • Location: Devon, UK
  • Views: 278
  • Message 101 of 128

Re: t540p power supply problems

2014-04-08, 22:13 PM

The evidence keeps coming in that it has something to do with the Liteon charger rather than the cable.

 

The only thing that puzzles me on my system is that I also have 2x 90w chargers and they do not work at all!  (I now have 4x charges:  2x 135W Liteon - which have the problem and 2x 90w that do not work)...

 

As regards Lenovo support I am very reluctant to call them now;  This forum seems a good place to vent frustrations but then creates more frustration since support dismiss anything that goes on here!

 

Have gone back to buying Dell machines now after my experiment with Lenovo :( .

 

PS I am now monitoring battery condition and voltages using BatteryInfoView (nirsoft).  If I discover anything interesting I will post it.

 

 

Reply
Options

10 Posts

03-07-2014

Germany

10 Signins

84 Page Views

  • Posts: 10
  • Registered: ‎03-07-2014
  • Location: Germany
  • Views: 84
  • Message 102 of 128

Re: t540p power supply problems

2014-04-09, 21:56 PM

Story continues:

 

What happened up to now:

"Airplane Mode issue" Power brick # ending with 366

Hotline sent me a 362 Adaptor

Problem no longer show up.

Airplane mode could still be provoked by multiple connect disconnect as described here in the forum.

 

Lenovo Person "Mark_Lenovo" pointed to different rootcause in this thred (DC In assembly) - so I tried to get it changed.

 

Got the Spare part it was a #50.4L005.011, FRU: 04X5515 (as described as the correct one here in the forum) -  had it changed by technician.

 

Was quite shocked as the part in my machine was labled #50.4L005.011 as well (not ending with .001 as described in a previous post)

 

During the disassembly the techician did quite harm the gasket under the Palmrest Bezel - seemed to need a special trick to take apart...

 

Strange: The # 366 power brick works now without probelm - so DC In assemby really seemed root cause for "airplan mode"

 

Airplane mode could still be provoked by multiple connect disconnect  - so this may be a driver/power manager issue...

 

Was puzzled and did sent PM to Mark_Lenovo - up to now no response, so decide to post my observations here...

 

By the way: there may be other issues with my machine as I have currently issues with intermittantly not detecting a battery (battery symbol greyed out, nirsoft does not see a battery) - tomorrow technician will come with new motherboard ....

 

This poor thing is riddled with issues .....

Reply
Options

4 Posts

04-18-2014

Germany

3 Signins

22 Page Views

  • Posts: 4
  • Registered: ‎04-18-2014
  • Location: Germany
  • Views: 22
  • Message 103 of 128

Re: t540p power supply problems

2014-04-19, 7:53 AM

Hi,

 

my own case (I added it also in the German forum):

 

In mid April 2014 I bought a T540P, 20BE005YGE with i7-4700MQ.

 

My dock is a simple USB 3.0-Dock. The Thinkpad power supply is directly connected to the Thinkpad.

The power supply is a 135W model (150,54 Wh), FRU 45N0366 (Lite-On), model ADL135NLC3A, REV 100 dated 2014.01.

 

Sporadically and most often when the PC is already running for some time, the switch to the airplane mode occurs.

At the same time the indicator in the task bar changes from "AC connected" to "AC disconnected".

 

I am using Windows 8.1 Update 1 with all most recent drivers and BIOS 2.10.

I have installed Lenovo Power Management Driver 1.67.04.05 but no Lenovo Power Manager.

I have also installed the Lenovo Dependeny Package 8.1.

 

Via IBM ESC+ I already sent a Service Call and hope for reply and a new power supply. (Unfortunately the form fields are outdated so In can't write in the long model number.)

 

I am trying as a workaround since yesterday: In the energy options I reduced the CPU maximum power to 90% to try if the quick maximum energy request in some situation (video or something) of the CPU provokes the power issue.
Until now all works fine...

 

Best wishes,

Klaus

Reply
Options

4 Posts

04-18-2014

Germany

3 Signins

22 Page Views

  • Posts: 4
  • Registered: ‎04-18-2014
  • Location: Germany
  • Views: 22
  • Message 104 of 128

Re: t540p power supply problems

2014-04-23, 15:53 PM

Update:

I received today a new power supply via UPS:

FRU 45N0362, Model ADL135NDC3A, manufacturer Delta, Rev. A of 2014.02, with 148,3 Wh.

 

I will monitor the situation.

In the meantime I deactivated the airplane mode in the "PC settings" (in the Windows 8 sliding panel on the right) and had no problems any more... Addtionally I deactivated the frequency change at power/battery change in the Intel display driver.

Today I am not 100% sure whether or not this is really a hardware problem with the power supply (or maybe internal power connector as described) or a driver problem, in my specific case.

Reply
Options

8095 Posts

11-19-2007

United States of America

10101 Signins

400183 Page Views

  • Posts: 8095
  • Registered: ‎11-19-2007
  • Location: United States of America
  • Views: 400183
  • Message 105 of 128

Re: t540p power supply problems

2014-04-23, 17:39 PM

All,

 

We are still working on this.  We've collected a number of adapters, but have not replicated the problems as described on our test systems.  It may be a combination of specific system and the adapters.

 

We are still working on it, so I appreciate all the work around solutions / updates from the community.  All helpful .

 

I just wanted to let you know that we had not forgotten about this issue.

 

Mark

 

Reply
Options

20 Posts

01-31-2014

Devon, UK

45 Signins

278 Page Views

  • Posts: 20
  • Registered: ‎01-31-2014
  • Location: Devon, UK
  • Views: 278
  • Message 106 of 128

Re: t540p power supply problems

2014-04-24, 9:55 AM

I continue to experience random pop ups re airplane mode.

I still unable to identify the trigger for this and the usual suspects remain (driver/power cable/adapter).

 

I have been busy so have not made any more attempts to fix it. 

 

As I said before I am relunctant to have the laptop dissasembled again to replace power cable because there is the risk of damage and there is no guarantee this will fix the problem.

 

Mark, I am sure we all appreciate your update and that this problem has not been forgotten. 

 

* A practical step forward would be if you could support us in obtaining the Delta adapters to try out?  We can then feedback if that has fixed the symptoms.  I accept this is informal and may not address the root cause but it would be useful information for you to have and a lot cheaper for lenovo then sending out engineers to try various fixes.

 

I have tried to get support to send me a Delta charger instead they sent me another Liteon charger!  I then tried to get them to send me a Delta but they said they could not do this....  It is all very frustrating.

 

 

Reply
Options

6 Posts

04-08-2014

Russia, St. Petersburg

90 Signins

148 Page Views

  • Posts: 6
  • Registered: ‎04-08-2014
  • Location: Russia, St. Petersburg
  • Views: 148
  • Message 107 of 128

Re: t540p power supply problems

2014-04-24, 14:16 PM

Update:

 

Got my hands on 7 new T440p with docks.

 

M/N of laptops: 20AN-0037RT

M/N of docks: 40A20090EU

 

 

PSU form docks are good (as I described already - there is no such issue with 90W adapters).

Laptops were shipped with 135W PSU with FRU: 45N0502

 

From fru listing  for T440p looks like the 45N0502 is Common Liteon 135W 3pin CMN modified AC Adapter FRU <SECONDARY>

 

What dows it mean, CMN modified and <secondary>?

During installation of additional memory and swapping HDD to SSD, I've got a glimpse of DC cable:

 

Old T440p:

P/N SC10A23364

LUXSHARE-ICT B0929

VIL T2 DC IN CABLE

 

New T440p:

VIL T2 DC in cable (SC10A23379)

DC30100L000 Rev:E0
Ampehnol 14/01/19

 

Currently 5 of those new laptops are deployed to users, and no issues reported yet. 

As I thought that new PSU are working with T440p and T540p, i've got 2 of them (again, FRU P/N 45N0502) and plugged into previously affected T540p and T440p - with same result. Screen blinking, and sometimes goes to flight mode. And of course the most annoying trouble with USB attached devices stopping working.

 

Also I've tried to connect previously affected Liteon PSU into new T440p (FRU P/N 45N0366). Users reported same issue, but much less frequent than with old models.

 

All PSU were pluged into Docking station (Type 40A2FRU P/N 04W3947, P/N SP20A06037), both new (already shipped with 2.17 firmware) and old (flashed with 2.17 manually).

 

Hopefully soon I'll get my hands either on new T540p or W540 (if it'll become available at Russian market) for further tests.

 

Hope this helps! 

 

 

Reply
Options

8095 Posts

11-19-2007

United States of America

10101 Signins

400183 Page Views

  • Posts: 8095
  • Registered: ‎11-19-2007
  • Location: United States of America
  • Views: 400183
  • Message 108 of 128

Re: t540p power supply problems

2014-05-08, 19:00 PM

 

All,

 

Some 135w Liteon AC adapters with FRU 45N0368 (for 2 pin) and FRU 45N0366 (3 pin grounded) could cause the system to switch to airplane mode.  Other intermittent power related symptoms are possible.

 

Our recommendation at this time is for customers who are experiencing these symptoms, to contact service.

 

Service should replace the adapters with : Delta 135W 2pin AC Adapter (FRU 45N0364) or Delta 135W 3pin AC Adapter (FRU 45N0362).

 

We are in process of releasing service tips to guide support centers and service partners on this issue.  As it may take several days for this to publish thorugh various systems and the information to be available to our global service network, I would recommend waiting until late next week before contacting service.

 

Thank you for sharing your various test / configuration rusults in the forum - this has been very helpful!

 

Best regards,

 

Mark

 

 

Reply
Options

8095 Posts

11-19-2007

United States of America

10101 Signins

400183 Page Views

  • Posts: 8095
  • Registered: ‎11-19-2007
  • Location: United States of America
  • Views: 400183
  • Message 109 of 128

Re: t540p power supply problems

2014-05-08, 19:15 PM

Stm,

 

Replying to you last post...

 

Apologies for delay in reponse - my PM box stays pretty full.   The issue on some T540p system with the DC port being the culprit is real, and that could cause the intermittant charge / connect issues.    This intermittent connection could have similar sounding symptoms to what we are finding here with some of the 135w liteon adapters.

 

I suspect it will be easier for T440p customers to isolate the AC adapter since the DC in ports are different than the T540p.

 

Some on this thread talk about display flickering and docks, so while power state changes can cause flicker and could be this issue with AC adapter, I would also want to make sure for those customers, that they have updated the dock firmware as the solution in the other thread here.

 

I point this out since I believe there may be some overlap in members participating in these 3 different threads and I would the same might happen with people just reading the forum.

 

Best regards,

 

Mark

Reply
Answer
Options

2192 Posts

05-02-2008

Malaysia

14693 Signins

219550 Page Views

  • Posts: 2192
  • Registered: ‎05-02-2008
  • Location: Malaysia
  • Views: 219550
  • Message 110 of 128

Re: t540p power supply problems

2014-05-28, 2:00 AM

Hi All,

 

As Mark mentioned in earlier note, if you experience a pop up message that Airplane power mode is enabled, please contact our service.

 

A service tip has been released for service engineers to help you further.

Call the Help Center, reference this Tip number, and have the AC adapter replaced according to the following chart:

 

CUSTOMER CURRENTLY HAS:

REPLACE WITH:

FRU 45N0368 (2pin)

FRU 45N0364 (2pin)

FRU 45N0486 (2pin)

FRU 45N4485 (2pin)

FRU 45N0366 (3pin)

FRU 45N0362 (3pin)

FRU 45N0502 (3pin)

FRU 45N0501 (3pin)

 

Hope this helps.

 

Best regards,

Cleo


T410, x240

Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!

How to send a private message? --> Check out this article.


English English Community   Deutsche Deutsche Community   Español Comunidad en Español   ru.gif Русскоязычное Сообщество

0 person found this solution to be helpful.

This helped me too

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete

X

No, I don’t want to share ideas Yes, I agree to these terms

Most Liked Authors

(Last 7 days)

View All