Wisdomshow WDS-420, First Blood
Once upon a time, the company that contracts me decided to speed up my work and gifted me a BGA rework workstation. But while that BGA station was in transit, an evil witch cursed it, and instead of turning on nicely, it began emitting a horrible sound like an angle grinder cutting through a stainless steel plane. Then I discovered a multitude of Chinese factories that do BGA soldering in-house, and the station sat quietly on a shelf until the mighty hero decided to fix it...
To be honest, I was expecting to see a huge fan sitting on a bearing that needs to be pressed out with a six-ton press. What I found in reality was a tiny 4x4 cm fan that was producing that horrible sound. The fan model is Nidec Ultraflo W40S12BS4A5-07. I was able to find a replacement locally. The replacement part is: SUNON PF40281B1-000U-A99. Despite its tiny size that fan consumes 0.65A at 12V and produces a mighty airflow that can elevate it above the flat table surface. It also cuts flesh quite quickly and efficiently, thus the first blood, so keep your fingers away while it works.
Long story short, the station works now, but I need to configure the profiles. Unfortunately, the graphic user interface isn’t the most user-friendly. The infrared preheater works ok. I was able to start both lower and upper hot air nozzles once. Hopefully, I’ll get it to work soon, because it’s quite powerful and almost functional.
The original manual is written in Polish. I have machine-translated it into English. Files are available here: WDS420-manual.zip