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Replacing Video Processor on HP Pavilion tx2000z Laptop

The display stopped working and from research the video processor chip (NVIDIA GeForce Go 6150) has died. I want to try to replace the chip to see if this fully fixes it. (Yes, I have soldering experience and access to desoldering tools/station for high pin density parts.)

I have two questions:

- Where can I purchase the part?

- Will there be any programming or config that needs to be loaded onto the chip?

Thanks -- DG

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Have you tried hooking your system up to an external monitor to see it also shows a bad/blank screen? Is your system freezing or shutting down. Please tell us more about what your laptop is doing or not doing. More than a bad video chip can cause no video on a laptop display.

Those chips don't have pins they have pads. I would give up the notion of replacing it unless you already own a reball station. A good reball station and chip are going to cost you more than board replacement. Besides the only way to get the chip is used. The cheapest way to get it is to buy a broken laptop with the chip and remove it yourself. No programming is necessary to replace the chip.

However you have not mentioned any thoughts or attempts at reflowing the BGA for the chip. The chances are the chip itself is not bad. More than likely it is actually the balls of solder between it and the board have worked loose. If I had the equipment necessary to replace the chip I would attempt to reflow the BGA first. Please do some research on the success rate of reflowing the chip. Please hook up an external monitor to the laptop to solidify if your blank screen is caused by the chip. If an external monitor has a good picture it is not the chip.

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I did try external monitor which didn't work. When started all the lights come on, fans spin, CD reads, but no display. I tried booting off CD, going to boot setup, etc but never got display. This laptop design has a history of the video processor chip going bad from excessive heat. I have other steps to try using scope and logic analyzer but will have difficulty since no schematic and hard to probe BGA's. I didn't think about just reflowing part based on history of parts dying from heat. I didn't want to spend a lot of time trying to repair. Replacing the part is not much work compared to trying to do a full analysis of the failure. I actually haven't even opened the laptop up.

FYI, my job is a design engr and I deal with BGA's. Just don't have a source for GPU's since our products don't use them.

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That chip is no longer made. Your only chance to find one is used, more than likely still attached to a motherboard. I wish you the best of luck on your quest. Have a wonderful day!

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