Question about Compaq FP 7020 17" Flat Panel LCD Monitor

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After being on 3-4 min it shuts off and imediatly turns back on

I turn on my computer the monitor works for about 4 minutes maybe a little longer than it shuts of like the power was cut but the power cord seems to be working ok any suggestions

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The power cord isn't the only path the monitor needs. The connection between the system and the display can have problems.

With the power off: I would at least pull the signal cable and re-plug it several times to see if the problem leaves.

If it still shuts down, (power off again) open the system box, touch any part of the unpainted chassis metal to discharge any static buildup you might have; locate the video card (if it isn't an on-board chip), remove any screw holding the card in and rock the card in its slot to wipe the contacts, press back into the slot, replace the screw removed and try again.

Since the problem could also be caused by a dead backlight or the power supply for it, try to view at various angles to see if there is anything discernable on the screen.
If you can identify any content, then it is the backlight or supply.

Depending on your skill and the construction of the monitor, replacing the fluorscent backlight is a possible home fix.
If the high voltage power supply has failed, this is an item for a tech.

Posted on Aug 16, 2008

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