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

[Gene Heskett]

On Tuesday 28 November 2006 11:18, Scott van Looy wrote:
>Today Gene Heskett did spake thusly:
>> On Tuesday 28 November 2006 07:06, 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.
>>
>> No, I suspect (I'm a C.E.T.) where you made the mistake was in
>> disconnecting it, no doubt while powered up on both ends of the
>> connection.  Now go find one of your old grammer school teachers and
>> tell her you've been a bad boy & take the knuckle rapping she will
>> dish out. :-)
>
>Tsk. "Grammar"
>
I never claimed to be the last word in spelling.  But you'll have to admit 
you did get the message anyway. :)

>> I suspect that in the process of unplugging it, a ground connection
>> was the first to be opened.  In that case the input electronics in the
>> monitor, and possibly even the output stages of the video card are
>> pretty historical.  From your description its plain the monitor needs
>> a trip to the shop, maybe even back to the factory shop, probably for
>> a fresh copy of its video board.
>>
>> I'd test the video card in the computer with another monitor to see if
>> it survived.
>
>I'd reboot with it plugged in and see if I got the console...far easier
>than a trip to the shop... ;)

Humm, good point, but if you don't get the console, then what?

Then you're back to the spare monitor for the test.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
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Copyright 2006 by Maurice Eugene Heskett, all rights reserved.