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CCFL fails to light due to motherboard issue?


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#1 jbokh

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Posted 29 October 2009 - 05:27 PM

I have a DV2000 HP notebook computer that only produces a faint image - typical CCFL (lamp) or inverter issue right?
Well I tested the screen and it lit up with another computer. Tested the inverter with working screens that failed to light (I realize this doesn't necessarily insure the inveter is bad but was worth trying). So with this info I thought the inverter must be bad. I replaced it (twice) with brand new parts, neither of which solve the problem. I was still skeptical and happened across second dv2000 with a bad board (no POST). I could not tell with certainty that the screen assembly was still good, although I assumed it was. Using this other hp's screen, inverter and cable, I still had the same problem - no light only a dim image. Messed with brightness controls as well to no avail, BIOS does not include any other options.

Am I wrong to think the motherboard is the problem? And is there some kind of way to mcgyver the computer to light up?

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#2 dpunisher

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Posted 29 October 2009 - 06:48 PM

http://h10025.www1.hp.com/ewfrf/wc/documen...lc=en&cc=us

The video chip on the motherboard is bad. If you are lucky, HP might still cover it.

If you are interested, here is the background on "Bumpgate" and NVidia laptop cards.
http://www.semiaccurate.com/2009/08/21/nvi...tands-bumpgate/

EDIT: As far as McGyver:

Edited by dpunisher, 29 October 2009 - 06:54 PM.

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#3 garmanma

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Posted 29 October 2009 - 10:09 PM

As far as McGyver:

:thumbsup: :flowers:
Talk about a poor man's Wave Soldering machine

I used to work at a circuit board manufacturer and we done something similar
That was before multi-layer boards though
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