I have a broken fan for a Fujitsu-Siemens Amilo Xi2550 (part no 28G200750). Initially I wanted to replace the whole fan with housing but a replacement costs $25-30 which is way too much and I'm not sure that it is the fan that is broken in first place. I'm only willing to pay up to $12 to figure out whether that is the case.
I tried hooking up the fan to an ATX power supply on the 5V rail. When doing that, it spun up initially and then died. I felt a burning smell from the spindle of the fan afterwards so I figure that there must be something broken in the circuitry of the fan. The fan blades can move freely without any obstruction, btw just to be clear about that.
Is there a way to replace the motor/PCB? It is glued somehow to the housing and I'm not sure how to get it loose. I suspect that it is some epoxy that keeps it together. I also don't know how to find appropriate spare parts. Not sure hwat search criteria to use for such replacement parts. Perhaps the surface mounted components can be replaced, if they are identifiable and not ASICs.
Edit: I have now managed to get it loose. Thankfully, it is not epoxy. It is some tar like substance from the looks of it.
The first circuit with 4 pins only has the denomination ".SE", or rather "·SE". I'm not sure what that means. The second circuit has three rows of characters. It looks like that the first row says "H67", second row says "9 9", "9.9", "909" or "90.9". I believe that the circle is just a residue from the forging process of the encapsulation though. The last row says VM. So I'm assuming that it either says H6799VM, H679.9VM, H67 99 VM or H67 9.9 VM. I get no clues from Google.
The picture of the whole PCB has "E250336" on it. Also here, no clues from Google.