Sony Vaio VGN-SZ71MN PCG-6W2M
Sony Vaio VGN-Video Problems SZ71MN PCG-6W2M
The Sony Vaio VGN-SZ71MN PCG-6W2M Video Presents Problems, Vertical Lines Or Artefizi Screen
Reflow Or Reballing Video Sony Vaio VGN-SZ71MN PCG-6W2M
This time I present a repair of a Sony Vaio VGN-SZ71MN PCG-6W2M presenting video problems with vertical lines and artefizi in display.
The cause is a malfunction of the chip nVidia. whose tin solder with lead-free start to offset each other after a few years of use.
Here is the screen that I was presented during the launch, as early as the VAIO logo:
Note the artefizi displayed screen. As in other cases, often the Sony Vaio VGN-SZ71MN PCG-6W2M starts well but the video card is not detected.
This series is subject, like many other problems of loosening of the components, in particular the video processor and the chipset, due to the use of tin free of lead that – as shown in the next photo effected under the microscope – with time tends to flake.
This PC is a model a few years ago dedicated solely to business. Features a 13.3-inch display, so it is very small. It integrates an Intel Dual Core T8100 and nVidia GeForce 8400 GPU.
This graphics processor is the same mounted from other models such as the Sony Vaio FZ series that presents the same problems and symptoms: You can see my other articles where I show how you can fix them.
We begin as always to remove the panels that are based on the Sony Vaio VGN-SZ71MN PCG-6W2M. Our aim is to completely dismantle the motherboard in order to work on the video processor nVidia GeForce 8400m.
Usually remove small PCs such as this requires a good deal of experience and skill as the components are mounted in a small space. And for this Vaio it is the same condition.
So, if you want to take it apart, consider that you’ll have to have a little patience. We start with the unscrew the screws that we see on the bottom of our Sony Vaio VGN-SZ71MN PCG-6W2M. Then let us reflect on the mask on top of the keyboard that also includes panel with the power button.
Afterwards we detach the keyboard. Eye to the flat that attaches to the motherboard.
Screws Remove all the screws of the upper body …
… Gently detach the flat touchpad ….
..infine we can remove the part of the body including the touchpad and concealing other parts of the Vaio, such as hard disk, DVD and WiFi card.
Now detach the antenna cables of WiFi.
Then remove the WiFi module.
Then it’s up to the video cable. With extreme caution smuoviamolo and detach the pin raising the metal tab placed above it.
In subsequent steps provider and perform some steps and then remove the display.
This attention to the flat top is detachable.
Detach the other pins and remaining flat.
In the end I can disassemble the display, pulling it from the body.
We can now disconnect the connector connecting the keypad to the Top of the motherboard …
Take the screws that hold the handset to the body ..
… And rimuoviamola.
We proceed with the removal of the screws on the body of metal …
We dismantle the Bluetooth module ..
Attention when we remove some flat and plugs: caution, we can do a lot of damage …
After disconnecting all that prevented the removal of the upper body, we can finally remove it ..
Finally we can see the motherboard. To take it apart, however, still it required some steps …
… How to unscrew the screws holding the DVD …
… And other flat connected to the hard disk.
The hard disk is fixed by some screws to the body …
Do not forget the backup battery .. work rework requires high temperatures so the battery could explode ..
Last flat and pins to detach …
To remove the motherboard must disconnect – if we have not already done so – the sink that you see on the bottom and that cools the CPU. This could also be removed at the beginning because it was accessible from one of the rooms on the bottom, removed early.
Screws Remove the screws of the heatsink covering the CPU and detach any remaining plugs and connectors that are nearby.
Remember then how are positioned so as not to have problems with the subsequent assembly of the Sony Vaio VGN-SZ71MN PCG-6W2M after its repair.
We reverse the PC and work for a moment on this front to remove the heatsink that cools the CPU.
Finally we find processors … we raise the sink, let’s see what’s underneath … the CPU of course.
Finally the main board of Sony Vaio VGN-SZ71MN PCG-6W2M !!! There is still another heatsink as well as to dismantle the fan.
The other side of the motherboard ….
We remove the last heatsink, this has the task of cooling the GPU.
Detach the fan …
The component to be machined is here in the foreground: the GPU nVidia GeForce 8400m
In the case of rework with reflow we can clean the component with isopropyl alcohol or contact spray to dry, apply flux and follow the patterns of temperature for this GPU.
Normally if the component is still in excellent condition and the procedure is carried out with the policy, the repair is durable.
Otherwise you can think of a complete replacement of the chip nVidia with a brand new one or to a reballing welds of the graphics chip.
If reballing Vaio VGN-SZ71MN PCG-6W2M or in the case of complete replacement of video chips, supplying detachment of BGA using our good air station or infrared, we eliminate the residual solder on board / component through the use of braid ( all operations to be carried out with the utmost delicacy worth the detachment of some track ….)
As usual then we redo the ball pond (possibly with tin containing lead) using a special stencil and risaldiamo perfectly the components on the card.
Here are some photos taken during a reballing.
After finishing rework let cool slowly the motherboard Vaio VGN-SZ71MN PCG-6W2M and in the meantime let us dedicate ourselves to the cleaning of the fan and heatsink.
Let’s also remember – before you reassemble everything – to carefully clean the fan and heatsink.
We apply also on the processors of high quality thermal paste (Artic type) in order to conduct heat between the components and the heat sink optimally.
Remount everything and effettuamo some tests …. result, in this case:
Vaio VGN-SZ71MN PCG-6W2M Fully Functional!