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  • Registered: ‎11-29-2014
  • Location: Denmark
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  • Message 1 of 2

lenovo ThinkVision Pro2840m turning on and off

2014-11-29, 21:54 PM



I had a Lenovo Think Vision Pro2840m Microcode 3.01 that was experiencing some of the same problems described on this forum. It was was annoying but I could live with it. However I decided to call in and ask if i could have the firmware upgraded. 


Lenovo provided excellent support and sent me a new monitor, I returned the old one in the same box while the UPS delivery guy was there.


The replacement monitor with Microcode 3.07 has a way more severe issue, while all the other issues seem to be resolved the new monitor turns on and off every 5 seconds once the screen has been on for 5-10 minutes.


I have recorded a video 




Has anyone else experienced this? Is there some way to resolve it? It seems to help slight bit to turn the contrast WAY up but as soon as i go to a website or something that isnt nearly all white it happens.


I have triede with 3 different cables, both HDMI and DisplayPort nothing seem to work. All have the same issue.


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United Kingdom of Great Britain and Northern Ireland

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  • Registered: ‎10-22-2008
  • Location: United Kingdom of Great Britain and Northern Ireland
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Re: lenovo ThinkVision Pro2840m turning on and off

2015-02-05, 6:46 AM



It is pretty sad to see you experience this issue. I have several of these displays and one which runs on LN3.06 has more or less the same problem as yours, with the difference that it goes on/off just like yours every once in 4-6 hours of use. I don't know what causes this actually. It might be my GPU or the software I use causing a brief drop of signal. But indeed certainly very annoying. In your case it is absolutely severe.


I wonder if your harware/setup had ANY change what so ever between using the old and new monitor? And I am also very interested to know how did your story end?

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