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Old 13th July 2010, 06:06 AM   #1
timwebb is offline timwebb  United States
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Default HIFONICS bxi 1606d

ok i have another one of these,the power supply is shot. what resistors and mofets would be good?
i read on another thread 47 ohms and IRFP064N just need to be sure thanks!
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Old 13th July 2010, 08:45 AM   #2
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What were the originals?
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Old 13th July 2010, 09:03 AM   #3
timwebb is offline timwebb  United States
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FQP65N06 are the originals and 47ohm resistors
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Old 13th July 2010, 09:23 AM   #4
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FQP65N06

Mouser has the original parts.

The original is in a TO-220 package. The IRFP064 is in the TO-247 package so they're not interchangeable. I think there are two versions of this amp.

Have you checked the outputs?

Does it use the HIP4080 audio driver IC?
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Old 13th July 2010, 03:50 PM   #5
timwebb is offline timwebb  United States
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yea everything is burned on this amp and it uses the HIP4080 audio driver.
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Old 13th July 2010, 03:56 PM   #6
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If it uses the IRF3710 outputs, order the Z version (IRF3710Z). Also order a new 4080.

Check the low value resistors and the large diodes near the 4080.
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Old 13th July 2010, 04:07 PM   #7
timwebb is offline timwebb  United States
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i have some 3205 on hand will that work of testing till the new ones come?
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Old 13th July 2010, 04:09 PM   #8
timwebb is offline timwebb  United States
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here's the board
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File Type: jpg brutus.jpg (178.9 KB, 203 views)
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Old 13th July 2010, 04:10 PM   #9
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If you're going to install the 3205s, you may as well leave them. This drive circuit can handle the load. If you have a scope, check the drive signal on the gate pads for the power supply FETs before installing any new FETs.
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Old 13th July 2010, 08:37 PM   #10
timwebb is offline timwebb  United States
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is it common for an amp to have diodes cause all the ones in this amp is are gone
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