Solved: HP monitor going crazy on laptop

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plysne

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Oct 16, 2004
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I have a HP Pavilion dv2500 about 4 yrs old and just yesterday in went on the fritz in that after turning on and 3 minutes of heating up the monitor goes to an series of different ziggy lines with no text distinguishable. After cool down it again will load windows and all looks well for 3-4 minutes and then ziggy takes over again. Plugging into external monitor the external will mimic the laptops ziggy lines as well. In device manager it shows monitor controlled by Nvidia GeForce 7150M/630M. My question is for repair is this a swappable card or is it something hardwired to motherboard that local shop can't fix. If this has to go back to HP, my experience is that their repair about equals a new laptop. This is just a home unit and note vital to networking but more for the mundane homework. Give me your opinion and understanding of what can be done and what is probably cheaper. Thanks much.
 

dai

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Mar 6, 2003
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it sounds like the video chip is overheating

are you using the laptop on a hard flat surface

if the problem is with the chip it is usually better option to replace the laptop
 

plysne

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Oct 16, 2004
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145
Thanks for your opinion dai! I keep it raised about 1 inch of the desktop so the fan has an escape route. I agree that your analysis is what I expected as well. Just didn't know if it was a swappable board or hard wired to motherboard. Can't find any shop that will tackle it and most agree with your conclusion. Anyone know if a replacement chip is available anywhere? I have soldered many a motherboard in building a computer.
 

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Allan
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You could try something like this :- http://www.youtube.com/watch?v=aJI9mSEe-1U

I've never done anything like it myself.

You can't use ordinary soldering irons because the solder is applied as small balls between the chip and motherboard. Like this :- http://www.youtube.com/watch?v=nEMwLBFTpXY
If you watch carefully you can see the balls move when they melt and get sucked onto the centre of the solder pad beneath them. This is the easy part, getting the graphics chip off the board needs a hot air gun or similar as in the video and then cleaning all the solder left on the board. Then using a special stencil to locate the new balls onto the cleaned chip. Apparently this can be done 'at home' but you would have to buy the hot air gun and the balls etc.

Some places advertise this service for under $100/£100 - google should find them.
 
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