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Fixing a 16 inch monitor ?

Posted on 1997-05-11
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Last Modified: 2013-11-17
I have an old 16 inch Apple monitor. The brightness is starting to dull and I currently have the brightness knob up full. I have taken the back off the unit and adjusted the RGB knobs/sharpness knobs/contrast knobs but this didn't helpmuch. Is there some way of possible increasing the voltage to the tube to increase the brightness ? The screen is also slightly blurry which I would like to fix. Again this improved with alternations to the trim-pots but is there a trick to this ?

Thanks

Sonny

sfoster@tctysal1.telstra.com.au
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irac earned 600 total points
ID: 1535953
This is a tricky business, and unless you know about flyback transformers and how they can kill you, you shouldn't proceed. I have a Similar 16in monitor and I have found that you can't really do too much to fix the brightness.  You can fix the blurryness though, the focus knobs on the flyback should help you there.  I must stress again that unless you have the right kind of gear for this -  plastic adjustment tools and the THICK arm length rubber gloves that you should NOT try adjusting your monitor, and you will have to do it while its on to get any results.  Its better to be alive with a blurry monitor then dead with a semi adjusted monitor.    

On the other hand, I have successfully adjusted my Apple 14inch, and my Sun 17inch (a wonderfull monitor for adjusting) with tools that I got at Radio Shack for little $.  If you want to adjust monitors you should get some tools, and also get a program called TVman which will help you with test patterns.  For adjusting color you could buy an expensive ($3000) color tuning system or get a picture you know really well and make it 'look right.'

Again I stress using PLASTIC tools so you don't kill yourself or your monitor by shorting something.  Also wear thick thick thick rubber gloves.  

-Ira
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