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#1 |
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diyAudio Member
Join Date: Jan 2010
Location: memphis tn
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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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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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What were the originals?
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Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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#3 |
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diyAudio Member
Join Date: Jan 2010
Location: memphis tn
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FQP65N06 are the originals and 47ohm resistors
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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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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Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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#5 |
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diyAudio Member
Join Date: Jan 2010
Location: memphis tn
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yea everything is burned on this amp and it uses the HIP4080 audio driver.
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#6 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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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.
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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#7 |
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diyAudio Member
Join Date: Jan 2010
Location: memphis tn
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i have some 3205 on hand will that work of testing till the new ones come?
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#8 |
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diyAudio Member
Join Date: Jan 2010
Location: memphis tn
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here's the board
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#9 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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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.
__________________
Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links |
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#10 |
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diyAudio Member
Join Date: Jan 2010
Location: memphis tn
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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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