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Dave D
 
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"QJD1" wrote in message
...
Hello.

I have recently aquired an older second hand TFT monitor, Fujitsu x151f.
Otherwise it works perfectly, but there is one major problem. The display
is far too bright even when the contrast and brightness controls are
turned down to zero. If luminosity is further reduced from the video card
to acceptable elevel, the display starts to flicker. I'm now looking for
methods to reduce the luminosity of this TFT display to a level, where one
can use it and work with it without becoming blind (or at least without
headaches and serious pain in the eyes).

Any suggestion to electronically or mechanically make the display usable
is appreciated.


I take it the controls do actually adjust the brightness, but just not as
much as you'd like? If the brightness is clearly excessive, (get a second
opinion!) It's possible there's a fault in the backlight inverter, which
left could drastically shorten the life of the backlight tubes. There could
be excessive voltage to the backlight inverter, or perhaps a failed
component on the inverter PCB itself.

If you have electronic skills then perhaps some basic troubleshooting might
bring results. If not, either live with it or get it fixed (costly, probably
not worth it). You could perhaps try one of those anti-glare screens to
reduce the brightness.

If it is working normally but just too bright for your personal tastes,
there are ways to reduce the output of backlight inverters, but that is
beyond the scope of newsgroup correspondence. An easy 'one size fits all'
way which might work could be to lower the supply to the inverter. This may
not work well as performance could become intermittent or flickery.

Dave