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When can i open my computer there a problems, the screen were dispay the bad signal? what will ido

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CHECK YOUR ANTENNA/CABLE INPUT ALSO SEE IF UNIT WORKS WITH DVD ON A VIDEO INPUT. USUALLY IF A MESSAGE OF BAD SIGNAL COMES UP, THE SIGNAL INTO THE RF CONNECTOR IS TOO WEAK OR MISSING.CHECK THE CENTER WIRE OF THE CABLE THAT PLUGS INTO THE TV.

Posted on Jan 12, 2009

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Posted on Jan 02, 2017

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Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Cause of power going off: There is a bad 1000uF, 16V cap on the power supply board.

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Why did the cap go bad? The cap is too close to a heat sink and over heated.

What does this cap do? This cap sends a signal to an IC which keeps the monitor 'on' after the power switch is pushed. When the cap is weak, AC ripple voltage is applied to the IC and it sends a signal to shut the monitor off.

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Unscrew the mounting screws from the power supply board and remove.

You will need to pinch the plastic support in the middle of the board to remove.

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