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Old 19th December 2009, 03:49 AM   #1
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Default directed 1500d

Im working on this amp and the outputs are shorted. My first question is they use irfb31n20d in the outputs is there a good cross for that part or do i need the same part number?

Second question is Wondering if the 1023's and the1027's in this amp are the drivers for the outputs? Since one side of the outputs get red hot
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Old 19th December 2009, 04:11 AM   #2
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Can you post a photo of the inside of the amp?
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Old 22nd December 2009, 04:53 PM   #3
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ok back to this amp the power supply fets are also blown the number on them are fn230 75343G wondering what part number i need or is there a good sub?? since its a class d The crazy thing is that this amp uses the same board as the 1100 d
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Old 22nd December 2009, 04:59 PM   #4
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512-HUF75344G3
mouser

Check the drivers (Q15, Q16?) and the gate resistors also.
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Old 22nd December 2009, 05:08 PM   #5
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Ok drivers are blown also a1266 is that mpsa1266??
gate resistors are blown also

the outputs are fb31n20D wondering can i sub thoose or do i need the same part number ?? the other outputs are 9640's
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Old 22nd December 2009, 05:10 PM   #6
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2sa1266 or kta1266

IRFB31N20D

Use the same part number.
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Old 22nd December 2009, 05:19 PM   #7
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wondering where i can find the drivers for this i checked a few sites but cant find them
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Old 22nd December 2009, 05:31 PM   #8
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For the originals:
2sa1266 - Octopart

For subs:
511-BD140 (mouser) or a 2N6491 (installed facing the opposite direction) if the holes in the board are large enough for the legs to fit.
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