For a long time I had a problem repairing the rheostat of the fan in the cabin of the Citroen Xsara. The original transistor is PNP FW26025. The replacement is the MJ11015. I changed eight transistors, the fan stops working immediately when it is turned on or several times when it is turned on. The new part car owner thinks you are not a professional car mechanic. You suspect that something is still wrong with the car or the fan is faulty. Headaches for several days. I decided to open the transistor housing and to my surprise, I found the source of all my torture. Take a look at the video
https://youtu.be/B2Glw4fyzNE


From experience: When the fan is always on the original transistor is destroyed. When the fan does not work, the false transistor is destroyed.

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