De mannen van Frosty Tech hebben een klein griezelverhaaltje geschreven over een stoute CPU fan. In het artikel wordt verteld dat een nieuwe fan van Motor One binnen 24 uur een heerlijke verbrande plastic lucht wist te verspreiden . Bij het uit elkaar slopen bleek ook waarom de fan er de brui aan had gegeven: een component op het stukje PCB was zo heet geworden dat de boel ging smelten. Eigenlijk overbodig om te vermelden, maar de schrijver raad aan om deze fans niet te gebruiken...
The first bad sign was obviously the smell of burning plastic. However the frozen fan blades, and melted manufactures sticker were a good indication that something was really wrong.
It was not until we had the fan off of the heatsink that we realized this was more than a regular failure. In this instance the fan had not seized-up and then become overheated because it was unable to appropriately cool the heatsink, but rather had electrically shorted out. This had the potential to cause a fire, or at the very least kill the processor. It also left a rather funky burnt smell in my computer.
Since the fan was already toasted, we ripped it apart further to find the cause of the problem. Looking at the motor it is quite obvious that one of the semiconductors (not sure if its an IC or transistor) overheated and basically burned through the surrounding PCB. This then caused the sleeve bearing to seize up (or vise-versa) and the fan to stop rotating - assuming power was even going to it at this point :-)
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Bedankt Chandler^FOK! voor de tip!