LCD Problems (Was In praise of SMA) [RE-wrenches]

[John Raynes]

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Over the years I've observed that a lot of LCD displays seem to "die" at 
hot or cold temperature extremes, or in direct sunlight, only to return to 
normal once the extreme condition was removed.

I don't know if some LCD's are rated for better performance over wider 
temperature ranges than the others, but I bet that's the case.  The problem 
case I remember the best was with an old Keithley 130 handheld multimeter, 
vintage 1980.  Everytime I took that sucker out in direct sun, I'd lose the 
display in a matter of minutes.  Don't recall myself (or any other 
wrenches) complaining about DMM displays that fritz, so I guess you can do 
better these days.

Just an observation..

John Raynes
RE Solar
Logan, UT


At 03:06 PM 1/22/03 -0800, you wrote:

Peter/Wrenches:
...Displays:
The most common problem we are seeing is all black bars instead of
numbers....

We are perplexed on this one because, more often than not, the displays
are fine when we get them back and test them...

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