lvhongkun1987
New Member
Hello everyone, my FM3 has a USB interface issue where it cannot connect to the computer. I've been using the MIDI interface for data transfer and updates, but the entire process is very slow. Unfortunately, this method prevents me from using the FM3 as a sound card. After searching on Google, I found that many people have encountered the same problem. A small number resolved it by reinstalling the drivers, which I consider quite fortunate, as it indicates the issue isn’t hardware failure. However, the vast majority of cases involve hardware damage. In such situations, simply replacing the USB port won’t solve the problem, as the issue lies with the control chip. To fix this, the chip must be replaced. The specific model is ADSP-SC587KBCZ-4B by SHARC. Fractal’s official repair solution involves replacing the motherboard with a new one. If out of warranty, the cost is essentially equivalent to buying a new product. Currently, there are many electronics repair professionals in China who can handle this. The repair cost is typically around 1,000 RMB, excluding shipping fees. As someone who’s quite meticulous, I wanted to save money. So, I purchased the chip on Taobao for 500 RMB and then hired a local computer repair shop for a 100 RMB labor fee. The technician replaced the chip for me. It’s important to note that this entire process requires highly specialized equipment—a BGA rework station. Using a soldering iron or hot air gun is impossible, as it would inevitably damage the circuit board and other components.
Therefore, the most perfect repair solution is to purchase the chip yourself, then take it to a repair shop equipped with a BGA rework station, and pay a certain fee to have it replaced for you.
THIS IS THE OLD BROKEN CHIP

Therefore, the most perfect repair solution is to purchase the chip yourself, then take it to a repair shop equipped with a BGA rework station, and pay a certain fee to have it replaced for you.
THIS IS THE OLD BROKEN CHIP

