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Hello I have a monitor philips 190WV and suddenly contrast went 100 and i cannot change it cause if i press a button the only thing i can see is CONTRAST 100... also to disappear this message the only way is to remove the cable feet .. please help me cause contrast went very high. Thanks.

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I had the same problem. It was due to the right button being stuck.
I was sure it had to do with the contact and was dismayed to find ot you need special equipment to unscrew the back of the monitor off...
But luckily i solved it by flipping the button with my nail at the edge of the button.
The sudden press&release got it unstuck...
Hope this helps :)

Posted on Oct 18, 2011

  • GeorgeM Oct 21, 2011

    update: After opening the cover I poured some ethyl alcohol on the faulty OSD button next to the menu and fingers crossed it works fine now for more than an hour (without any of the annoying pop ups or auto increases of the contrast....) Fingers crossed this will last or else I read that you can completely remove the connection of the buttons microcircuit board provided the settings are good - I didnt try it since it works well with the cleaning. See what I did:

    Unplug all cables from the monitor so as not to get an electric shock!
    Lay it on a flat surface and remove the 3+1 screws from the back. Remove carefully the back cover. There are 7 clips up and down and 5 clips left and right every 4 cm or so, they are tricky to take them apart but if you use a flat screwdriver and put it between the front and back cover press inside a little bit and twist it you can make it.
    Take off the buttons board after unscrewing the two screws and pour generously ethyl alcohol on the button(s) contacts. Let it dry and assemble again. If it works fine say thanks to God and me and drink a beer :)

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I got the same problem .. can anyone help?

Posted on Nov 14, 2010

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