Fan power SUPPLY XPS 8700 block

I have an 8700 XPS which is now two weeks old.  The Tower began to make some strange electric tone and/or the sounds of gnashing especially at the start.  I removed the side cover and the noise is coming from the PSU.  Sometimes the power supply fan is running at very low REGIME and squeaks.  Other times at the start of the power supply fan turns at all and there is a strange electronic tone coming from the PSU.  If I move the blades of the fan with a plastic straw, the fan will run upward and tone noise subsides.  Faulty PSU?  The unit is under warranty, but having a Dell technician will come out can be a problem with my work schedule.  Reference Dell will send me a new power supply?  I don't mind reverse out and return the defective power supply.  Thanks for your help.

As I suspected, the BIOS update does not solve the problem of power supply fan. But if the flash update had bricked motherboard, Dell should replace it as well as the power supply under the warranty.

Dell computers may vary only the CPU fan speed based on heat, not their fan PSU OEM.

Hope that the new power supply solved the problem and you can continue to enjoy your new toy.

Post back and let us know what happens after replacing the power supply...

Tags: Dell Desktop

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