Question about Acer Aspire 4720 Notebook

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Advent 5431 laptop,changed screen and inverter..problem is screen is mashed up ie cant see anythink at all only when connect to external monitor when i view both screen laptop and external its like the screen on laptop has frozen and mouse pointer on screen wont move..funny thing tho if i put video on in full screen only and turn brightness down on windows media player i can workout a Perfect Picture on laptop screen..but if i turn the brightess up screen just go haywire..would a faulty cable from mb t monitor really cause this..to be honest i think i have a faulty graphic chip.:(

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Hi i think that the problem is a bad contact; the video signal was attenuated; you can't see anything; the solution is warm well the video connnector with a hot air; use a good liquid to clean before. and be sure that the new inverter is fine and the new lcd work properly

Posted on Oct 23, 2010

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It might be a bad connection on the cable supplying the screen.
It can't be the graphics driver as the brightness is controlled by the screen and invertor speeds.
If the connections are OK, I think you have a faulty panel as if you turn the brightness up the picture goes weird making me think the screen is faulty as the processing of brightness and contrast etc is carried out within the screen itself..

Posted on Oct 23, 2010

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