The first thing to consider is not how much it costs to change the graphics card chip, but whether it is worth it and the degree of trouble. The existing notebook display chips are all packaged in BGA and soldered on the PCB motherboard. If you want to change, you can only change the same chip, because the number of pins on the motherboard is fixed and the definition of each pin is different, so you must use the same chip. If you insist on changing it, well, let's see how to change it.
1, you have to remove the notebook motherboard and take your original display chip away with a soldering station or a hot air gun. When you take it, you should pay attention to it. If a pin is accidentally broken, the motherboard will basically be scrapped. The welding table needs an accurate temperature curve, otherwise it will not be taken down. When the hot air gun is heated, it is likely to affect the chip or device next to it.
2. If you are lucky and can come down smoothly, don't be happy. The hard part is over. You must find the same chip and implant the ball. Why plant balls? (what? You bought a brand-new display chip? All right, you win. ) Generally, when the second-hand display chip is removed, the solder on each pin must be dropped. If you want to use it again, you must first plant balls, that is, put solder balls on dense chips, and then heat and melt them. Motherboard should clean the corresponding pins, the cleaner the better.
3, welding workbench welding, if the cow force can be welded with a hot air gun.
4. Compatibility and longevity. Do you think the same chip has no compatibility problems? Of course, there is generally no problem. And if you can't find the reason why your chip is broken, replacing the same chip may not be long before it is broken again, although this is also a small probability event.
Finally, if you have these things at hand, and you are skilled and free, then start, or you should buy a new one that is not expensive.