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Fan tries to spin but it can't

My PS4 is presenting a blue screen with the overheating warninng, and then shuts down.

I exchanged the thermal past but, later, I saw that the fan wasn’t working. It tries to spin, twitches a little bit, but stops. It’s spinning freely when I try to help with my hand, however when it doesn’t work at all.

My question is: How would I know if the problem is either the fan, actually or the motherboard connection. Or even the power supply.

I couldn’t find any scenarios like mine in the internet.

Thank you for the help!!

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https://youtu.be/QGYIOOF3CGI video that I made to show what's happening.

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Just to give an explanation at all.. I bought a new one and put it in the actual spot. It started working again.

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Hello, jalotodelima,

if you have a voltmeter at home, let’s measure, if the power supply is working properly or not, easily measure the voltage between the red and black wire of your fan. It must be 12V (11,9 - 12,1) stable. So power on your console, attach the measure + probe to the red and measure - probe to black. If there is no voltage (12V) or if the voltage is dropping down, it’s an issue of your power supply (from the MB to the FAN).

The second scenario of the issue could be the MB signal to turn on the FAN. To measure the mentioned signal, you must have an oscilloscope (if yes, you certainly know how to measure the signal), if you don’t have an oscilloscope, easily un-solder the yellow (or 3rd cable), then power on your console and if the FAN is still not working and the inputting voltage is 12V (first paragraph), the FAN is fault. In the other way, your FAN will work on 100% performance, because you disconnected the speed control signal input. It’s no problem, but if you want to solve the signal issue, you must analyse, where the signal is creating and where is lost.

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