Alpine mrd-m500 v12 amp just got it for repair need some help

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ivkata

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Joined 2010
hello im newbie here looking for some answers.Im starting amp repairs at home with very short history of amp repairs-i probably fixed like 30 amps till today and i wanna get better and better so i've started buying blown amps to fix and offer for sale at resonable price.I got this Alpine in a lot of broken amps and once conected to power supply power light with flash so i opened it and checked all the mosfets so here we go i got few bad.See the problem is i cannot find one of them

Marking on the case is p14nf06 manifactured by st
when i go to their webside and enter the part number it always says part not found.When i enter stp14nf will show 3 results and none the same im looking for.
 
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