Question about Dell Dimension 5100 (D51L1) PC Desktop

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Puter has power but on switch just flashes

Light on m/board is but nothing is firing up , tyhe on switch just flashes on/off

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Try this unplug the computer hold down the power button for twenty seconds try again, no goif the light in question goes amber at any stage the power supply is bad.
Good Luck

Posted on Sep 05, 2009

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In your case, some internal component has failed. On most LCD TVs there is a power supply board, a main board, one or two inverter-boards, and a LCD controller board. Power supply problems are very common on all models.

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Has to be a bad a switch, wiring issue or maybe a control board. pull the service cover and see if the red light is lit on the board (or flashing). Light on (no flashing) indicates the board is powered up and no errors are occurring.

http://www.u-lineservice.com


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