all fans don't work
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Can you get a better photo of the mosfet TR5 beside the fan jumper? It looks possibly damaged.
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Looks like TR5 that controls Fan0 might be blown, but there is nothing but J3 and copper traces between the always on fans and Vin so the always on fans should work even if Fan0 does not.
Unless you can use a multimeter to measure continuity from Vin to Vfan I don't think I have more to add.
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@massimilianoconti said in all fans don't work:
the fuse is working
How did you verify that the fuse is still intact?
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with tester I checked continuity and everything seems ok. I attach the photo I believe tr5 broken. I don't know how it is possible. however no fan works
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I can't say more than that. I know that everything has gone well to date, it didn't take this problem, it forces me to replace the whole board I think. without fans no one can go.
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Try measuring as indicated, should beep or measure close to 0 ohm in all cases.
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there is continuity between the jumper and fan bridge and fuse. the size of the tr5 I did not understand how to do it
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I had seen badly I checked everything also the continuity between resistance and fan and power supply all ok
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@massimilianoconti said in all fans don't work:
all ok
if you the connect a fan to the always on ports and it doesn't work, then the fan (or power supply is broken)
To check mosfet TR5 you can mesure from Vfan- and GND like shown (use diode test --|>|--)
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the voltage is not zero, it marks a value
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I'm sure it won't kill you to be specific, about both measurements, need to reverse polarity and repeat measurement.
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I see + 0.3 v and -0.3 v
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Negative reading on a diode test, and fans that dont work when they should. I think you need an excorcist, or maybe some pictures showing measurement and meter.
