[Elecraft] P3 burn-in concerns?

[Alan Bloom]

The data sheet for the display we're using specifies an LED lifetime of 
10,000 hours minimum.  I expect that's probably a conservative spec. 
I've had mine on for thousands of hours so far with no noticeable change.

Alan N1AL


On 3/11/2013 10:42 PM, Ron D'Eau Claire wrote:
> I'm not certain, but I believe the backlight on the P3 is an LED panel.
> Whatever it is it's in integral part of a sandwich about 0.2 inches thick
> comprising the whole display.
>
> 73 Ron AC7AC
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Vic K2VCO
> Sent: Monday, March 11, 2013 9:40 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] P3 burn-in concerns?
>
> Many times when the "backlight burns out" on a computer monitor it is not
> the backlight at all, but rather the switching supply for the backlight
> that's failed. I've fixed a couple of these.
>
> On 3/11/2013 7:12 PM, david Moes wrote:
>> That would depend if the backlight is LED or cold cathode.     I service
> equipment with
>> LCD displays with both types of backlights and burnout is very very rare.
> on small
>> screens like the P3 the light is not being pushed hard and should last a
> long long time.
>>
>> As for burn in.   One of our machines with a 14 inch LCD display does in
> fact burn
>> in.    It takes a many months  of displaying the same image 24/7.  The
> customer never
>> sees the burn as that part of the screen never changes.  but with the
> different screens
>> I use in diagnostics I can see it.     If I leave it on a full white
> screen over night
>> it disapears and doesnt seem to come back for another several months so
> the burn in
>> seems to not be permanent.      on the P3 I doubt this will ever be an
> issue.
>>
>> David Moes
>>
>> dmoes at nexicom.net
>> VE3DVY
>>
>> On 3/11/2013 6:39 PM, Ralph Parker wrote:
>>>> No. The only possible issue is backlight failure, just like your
>>>> computer or TV screen.
>>> Tnx, Ron, just what I was hoping to hear.
>>> I usually turn the radio on in the morning, and off in the evening,
>>> longer periods only in a contest.
>>>
>>> Should I be concerned about the backlight? I've only had two burn
>>> out, one in a laptop (NEC) and one on a desktop monitor (Dell).
>>> I would suppose that the entire display module would have to be replaced.
>>>
>>> Ralph, VE7XF
>>>
>
> --
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco/
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>