Warming up necessary for LCD ??

  • Thread starter Thread starter cnlai
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C

cnlai

My LCD was working fine until about 8 months ago.

One day when I turned it on, the indicator light was orange (normally it
was red). No image could be seen no matter the CPU was switched on or not.

However if the monitor was turned off briefly, about 5 minutes, turned
on again after 30 seconds, it worked (red light).

After 1 week or so, 5 minutes became 15; and then 30, 60, 90; and
finally it refused to work again even if turned on for half a day.

I left it unused for half a year. After half a year I tried again and
the pattern above repeats.

I suspect some capacitor is damaged. Could someone offer some tips ?

Thanks.
 
YEs warming up is nessary. To do it properly go buy one of those
Butane gas torches and light it up and run the flame aver the screen
up and down all over till it snice and toasty.

That will fix it.
 
cnlai said:
My LCD was working fine until about 8 months ago.

One day when I turned it on, the indicator light was orange (normally it
was red). No image could be seen no matter the CPU was switched on or not.

However if the monitor was turned off briefly, about 5 minutes, turned
on again after 30 seconds, it worked (red light).
Click to expand...

"Warming up" is not generally necessary for an LCD to simply
wake up and display images (some warm-up time IS required
for the backlight to stablize, so for color-critical applications
or before testing brightness, contrast, etc., per the spec, some
warm-up will be specified.

Your monitor clearly has something wrong, quite possibly a
temperature-dependent problem in the backlight or (probably
more likely) its power supply.

Bob M.
 
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