Fading EVO screen
Senior Member
Joined: Feb 2004
Posts: 10,390
Likes: 10
This explains it nicely:
[Typical specs for commercially available displays]
http://americas.kyocera.com/kicc/Lcd...pconsider.html
http://www.oppod.com/shownotic.asp?id=86&tableN=News
So - while even the lowest-cost displays can operate in a ~50 deg C environment ( 122 deg F), you can see higher temps in a vehicle cab in summer. Add the internal heating within the active device itself, and you can readily expect to exceed the spec. (This may also explain why it returns to normal for a while after a disconnect - just a SWAG here, lol)
There is little reason to expect Edge specified as super-premium wide-range display (given the unit's low cost - someone can ask them - their manual is light on specs - only reference is, do not use unit to program above 120 deg F). Add to that the (apparent) suboptimal auto temperature compensation for display contrast ( another cost-saving measure), and it's not beyond the realm of possibility to experience the symptoms you folks are describing.
So - long-term degradation, manual contrast adjustment requirements, and possibly , over time (optionally factoring in the low-end freezing damage some can be exposed to - a real concern for the 'liquid' component of this technology) outright panel failure.
MGD
[Typical specs for commercially available displays]
http://americas.kyocera.com/kicc/Lcd...pconsider.html
http://www.oppod.com/shownotic.asp?id=86&tableN=News
So - while even the lowest-cost displays can operate in a ~50 deg C environment ( 122 deg F), you can see higher temps in a vehicle cab in summer. Add the internal heating within the active device itself, and you can readily expect to exceed the spec. (This may also explain why it returns to normal for a while after a disconnect - just a SWAG here, lol)
There is little reason to expect Edge specified as super-premium wide-range display (given the unit's low cost - someone can ask them - their manual is light on specs - only reference is, do not use unit to program above 120 deg F). Add to that the (apparent) suboptimal auto temperature compensation for display contrast ( another cost-saving measure), and it's not beyond the realm of possibility to experience the symptoms you folks are describing.
So - long-term degradation, manual contrast adjustment requirements, and possibly , over time (optionally factoring in the low-end freezing damage some can be exposed to - a real concern for the 'liquid' component of this technology) outright panel failure.
MGD