Question about HP FS492AWABA - Compaq dc7900 Convertible Minitower PC Desktop

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I have several dc7900 not turning on. The mainboard and ethernet port is flashing amber on one and two just the mainboard is solid amber

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  • Greg Just Oct 16, 2013

    The tech who has previously repaired the desktops for me said he had replaced capacitors as they had blown, I'm wondering what the difference is showing with the flashing amber lights as opposed to solid amber...

  • Greg Just Oct 16, 2013

    also how do you tell when a capacitor is blown other than the top of the capacitor being raised which I cannot see on any of the motherboards...

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Remove the power plug from the back of the computer. Take a small screw driver and cross the two vertical leads then cross the left lead to the ground post then do the same with the right one.Plug it back in and see if it turns on then if not it could be your power supply caused by a power surge. Is my guess.

Terry

Posted on Oct 17, 2013

Testimonial: "It is almost certainly caused by a power surge - but it's not the power supply as I have 8 of these dc7900's and have tested it on a known good power supply. Problem is the capacitors which I am about to replace, but wanted to know what the difference in the two symptoms was...."

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