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Old 26th January 2004, 10:19 PM   #1
catchuk is offline catchuk  United States
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Join Date: Jan 2004
Location: tampa
Question mtx 421d amp

it looks like i blew the fets on my mtx 421d the part number is 75339p. there are 2 of them and i believe they are the outputs. if i replace them then what part number would i use and then do have to chnge anything else. also how do i adjust the bias after. is it necesary?

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Old 5th February 2004, 10:20 PM   #2
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Join Date: Apr 2002
Location: Dayton, OH
Default IRFZ46

MTX uses "hidden" part numbers to discourage repair work by non-MTX technicians. Fortunately, there are few (read zero) custom made transistors in consumer electronics - and there's almost always a cross-reference.
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