Can an LCD display be damaged by the wrong display output?

Gene Heskett gene.heskett at verizon.net
Tue Nov 28 15:59:35 UTC 2006


On Tuesday 28 November 2006 08:06, Gilboa Davara wrote:
>On Tue, 2006-11-28 at 07:06 -0500, Rick Bilonick wrote:
>> I have a Planar 20" PL2010M LCD monitor. I attached it to an Athlon 64
>> system running FC6 and using the nvidia proprietary driver (the latest
>> available). I tried (foolishly) the 1920x1080 interlaced output. The
>> monitor said it was outside the range. I reset to 1600x1200
>> noninterlaced and everything was fine. Later I connected a similar
>> computer (running FC5) that was displaying 1920x1080i (same nvidia
>> card - 5700LE or such). I noticed my mistake right away and I
>> immediately disconnected the monitor. Now, the PL2010M won't display
>> anything. The on light switches quickly from green to a constant
>> yellow and displays "no input signal" on the screen regardless of
>> whether I'm using the analog or digital input. I can no longer bring
>> up the setup menu (e.g., to change from analog to digital) - no menu
>> whatsoever. I called Planar and they said it wouldn't damage the
>> display but it seems like too much of a coincidence.
>>
>> Rick B.
>
>Unless you have 20 y/o CRT, your LCD/CRT will simply shut down if you
>try to use an invalid resolution/refresh rate.
>Some monitors will not display the OSD (E.g. Menu) when connected to
>invalid display source.
>Just disconnect the monitor from the machine and/or fix the X.org
>configuration and the menu will work just fine.
>
You hope.  Disconnecting things while powered up is never a good idea, 
ever.  See my previous reply.

>- Gilboa

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