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Old 06-14-2019, 08:59 PM   #1
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Join Date: Feb 2011
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Default Help needed identify Diode - PSU FSP Hexa 500W

Hi All

Need help to identify a shorted diode on PSU Hexa 500W.
Don't know what rating to replace with.

Shorted diode is D24.
D24 is located just under the long heat sink (indicated by arrow).
there is a familiar looking diode at D25
Main Fuse is also blown.

Any help is appreciated. Thanks
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Old 06-14-2019, 09:27 PM   #2
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Default Re: Help needed identify Diode - PSU FSP Hexa 500W
Did you remove it and test it off the board? It is connected in parallel with the resistor R84 (I cannot cleary see the print on the body, but more likely to be a 10 Ohms resistor).
BTW, that diode/resistor network is for Gate discharge which is connected to Gate of the MOSFET, you should check and see if the MOSFET is OK or not.
Since the main fuse is blown, you need to check all the power semiconductor devices for shorts.
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Last edited by budm; 06-14-2019 at 10:22 PM..
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