Question about HP Pavilion F1903 19" Flat Panel LCD Monitor

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Black screen and yellow flashing power button on hp f1903 monitor

Black monitor screen and yellow flashing power button on hp f1903 monitor. Pulled inverter board and inspected the soldering. resoldered one capacitor that had one bad looking solder joint. box shaped capacitor 33mfd.

All components look fine and no obvious burnouts.

Burned/smoky odor from board but more noticeable at transformers on board.

Reasselmbled monitor but still have flashing yellow light at power button. Screen does not light.

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  • Buddy Mcsparrin May 11, 2010

    Hello, Can you send me a picture of your inverter and powers board? You issue sounds like bad capacitors in the power supply. You may have some capacitors that have died but don't have visible damage. The capxon caps are known to die with no visible sign. If you can send me a picture of your power board as close and clear as possible I may be able to direct you replacing caps to get you going. Buddy Corporate Computer www.ccl-la.com tech@ccl-la.com

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Posted on Jan 02, 2017

Matampong
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SOURCE: Screen flickers, turns on and off

Normally this kind of problem needs only the dry soder, cause theres some loose components some where on the main board. Try to resolder any visiual suspicious terminals of components.Try to see carefully if any of the capacitor has any buldgy appearence on top of them. If there is try replacing them.cheers

Posted on Nov 23, 2008

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Hello,

I have also seen this type of problem. Have you checked the large caps on the inverter board, no just the power supply board? Many LCD monitors have 2 caps on the inverter and I have had to replace them from time to time. The next thing to check would be the driver transistors. I hope this helps.

Buddy

Posted on Jun 23, 2009

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