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Dell XPS PP28L laptop motherboard repair (M1530)
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TOPIC: Dell XPS PP28L laptop motherboard repair (M1530)

Dell XPS PP28L laptop motherboard repair (M1530) 9 years, 6 months ago #1232

  • YLG80
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The PP28L Dell laptop suffers from the same problem as the Medion laptop.
The Graphic chipset is also a NVidia 8600GT .
Symptom : Black screen/ display - no video even when plugging an external display.
Cause : Bad solder joint on the NVidia BGA chip.

The chip is easy to locate under the large plastic cover on the bottom side . (see picture)

IMG_1244web.JPG


As with the Medion, the only way to try to repair the motherboard is to reheat the chip.
First of all, remove the heatsink with the fan. (see arrows on the picture)

IMG_1243web.JPG


If you have a professional hot gun for SMD, you can reheat the chip without completely dismantling the laptop.
If you use a standard hot gun (paint remover) you should remove completely the back panel to avoid to burn the surrounding plastic parts.

Put the laptop upside down on a flat surface.
Remove any thermal paste remaining on the chip.
Put some "heavy" piece of metal on top of the NVidia chip. I've used a 15mm dia. socket wrench.
It will slightly put a pressure on the chip while reheating.

During about 1 minute, start a light reheating of the chip and the surrounding area. (Hot gun distance of 5 cm)
Always make a circular movement above and around the chip.

Once the chip area has bee heated, reduce the distance between the chip and the hot gun down to 1.5 - 2 cm/
Move the hot gun heat in a circular movement on top of the chip around the socket wrench.
Do not hit the socket wrench while reheating.
Do that during about 3 minutes.
Then increase the distance between the chip and the hot gun, and gradually reduce the chip T° during about 1 minute.

Without moving or hitting the laptop, let the mainboard cool down during about half an hour.

Apply thermal paste on the chips (CPU and Graphic + Thermal pad on N-S Bridge chip) and reassemble the heat sink + fan.

Test your laptop. In my case, the video was OK.

As a precaution, I insert something to push on the chip between the chip and the large plastic cover before reassembly.
This will put some pressure on the chip.

(I did that on a Toshiba Satellite Pro (the forum server ) four years ago, without reheating the chip.
The laptop is still running OK today.

The following user(s) said Thank You: Frankiejay

Re: Dell XPS PP28L laptop motherboard repair (M1530) 9 years, 1 month ago #1357

  • olaffoster
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Hello..
The information you added in this post is new to me. I was not aware about it.. I am glad i visited here and come to know about it. I think, this info will help me a lot in future.. I will look forward to it.. Thanks..
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Re: Dell XPS PP28L laptop motherboard repair (M1530) 5 years, 11 months ago #2467

  • Frankiejay
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Hello I have a similar problem but a bit different I have the same laptop but during a heated argument my laptop got punched on the screen and fell to the floor now it doesn't start like it should actually the only thing that lights up is a couple of lights and nothing I've been told it's the motherboard by some guy totally un relyable. So I've took it apart now to see and learn how computers work and now I'm asking for help how to check each component as I want my laptop back. Thanks

Re: Dell XPS PP28L laptop motherboard repair (M1530) 5 years, 10 months ago #2477

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