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4 Posts

06-12-2014

Denmark

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Generation T_40, issues rundown

2014-07-03, 13:02 PM

Mojn!

 

I have created this thread in order to shed light/Focus on all the issues in the newest generation of ThinkPads (T440 and on).

 

Lenovo has behaved as a low-tier manufacturer in this whole case, by not acknowledging the issues and taking action.

 

Lets sum up:

1. "Power supply issues" (Experienced first hand on T440, T540p, W540, with 135W PSU's):

 

Symptoms includes the pc activating Air plane mode with a message "A problem was detected with the power supply"
Temporary workarround includes using either a larger or smaller PSU
Permanent fix includes replacing the power connector within the pc (fru:04X5515 For T540p/W540).
(It took us a month to get a technician to replace that part - because the issue is not acknowledged by Lenovo.)

 

2. Dock connection, interrupted, screen flicker. (Experienced first hand on T440, T540p, W540, with 135W PSU's):

 

Symptoms include USB peripherals disconnecting, screen flickering for some seconds.

Presumably caused by defective firmware in the dock.

Temporary workarround includes usind a larger (170W) or smaller (90W) PSU for the dock
Most issues here fixed by firmware update: http://support.lenovo.com/en_US/detail.page?DocID=HT081248

 

3. Occasional screen flicker when docked (Experienced first hand on T540p)

 

Symptoms includes the screen flickering off for a second.
A workaround includes setting "Advanced" GPU as default in BIOS - though i havn't confirmed this, as i do not know how to reproduce the error.

One thing i need, is a way to provoke the symptoms - Any ideas?



Thanks

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4 Posts

06-12-2014

Denmark

5 Signins

39 Page Views

  • Posts: 4
  • Registered: ‎06-12-2014
  • Location: Denmark
  • Views: 39
  • Message 2 of 3

Re: Generation T_40, issues rundown

2014-07-03, 13:04 PM
Note: we are beeing pressured to switch to another brand (DELL). I don't want this!!!!
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4 Posts

06-12-2014

Denmark

5 Signins

39 Page Views

  • Posts: 4
  • Registered: ‎06-12-2014
  • Location: Denmark
  • Views: 39
  • Message 3 of 3

Re: Generation T_40, issues rundown

2014-07-11, 8:17 AM

Recently had a visit from a certified service partner.
They added - off the record - that mainboard replacement was the only working solution at the moment.

 

I will implement a company wide disabling of Automatic AitPlane mode - which is a symptom causing most of our troubles.

 

http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W540-charging-bug-WiFi-OFF-no-charge/m-p/1498288#M44910

 

It's treatment of symptoms, but it's something..

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