Blown parallel FETs?

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If you ever had a bank of FETs fail, you know the feeling. :(

Here's a handy way of finding the bad one.
Note: not plural.

Put an ohmmeter across D - S.
Take a large soldering iron and hold the tip on the body of the each FET and heat it up.

If it's the bad one, the ohm reading will noticeably increase.

Beats the heck out of desoldering, especially if SMT devices.
 
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