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Old 12-03-2012, 04:15 AM   #1
keith.aranjuez
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Default CRT monitor too bright

hi, my aoc crt monitor is way too bright even with brightness turned to 0 and when i disconnect the video cable the screen is all white instead of black. what could be the problem? thanks
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Old 12-03-2012, 09:28 AM   #2
Gabriel Torres
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keith,

This problem is caused by the adjustment of the "screen grid", a high voltage adjustment inside the monitor that is sending too much voltage to the screen. You can easily correct this yourself by opening the monitor. This adjustment is a trimpot usually located on a small printed circuit board attached to the neck of the CRT. Just make sure to not touch anything while you are performing this adjustment.

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Old 12-04-2012, 01:33 AM   #3
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thanks, but will too much voltage that the screen grid is sending to the screen damage the monitor permanently?
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Old 12-04-2012, 08:04 AM   #4
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If I may recall, by default it should be sending something around 400 V.
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Old 12-04-2012, 08:37 AM   #5
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thanks, maybe i'll just get an lcd screen, just to be safe and i'll try to repair the crt if i have extra time. thanks again.
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Old 12-05-2012, 08:47 AM   #6
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Absolutely. The price of LCD monitors dropped so much that it doesn't make sense to spend your time fixing your CRT monitor (unless you want to study how it works)...
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Old 12-06-2012, 04:44 AM   #7
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this morning when i was testing the crt just to see if it's really dead i was shocked that the monitor somehow fixed itself..
thanks anyway.. waiting for my lcd to arrive

Last edited by keith.aranjuez; 12-06-2012 at 04:45 AM. Reason: typo
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