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C3150 Power transistor exploded in PSU

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jonnybgood

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Hi,
I am trying to repair an atx-500 psu after the c3150 power transistor exploded in two pieces. Last night there was a thunderstorm which might be the main cause although this incident happened when the user tried to turn on the pc.

Besides replacing this TO-220 device, which other crucial components should we check? Please note that the fuse remained intact.

thanks
 

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