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Thread Tools | Search this Thread |
23rd September 2010, 03:14 PM
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#1 |
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diyAudio Member
Join Date: Sep 2006
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MA Audio AMP
Im working on this amp not sure what modle it is .
The power supply fets were all shorted . I replaced thoose all gate resistors checked fine. But when i looked at the drivers on the board it looks like someone has replaced them at some point but there are 2 2SA1023's Isnt one of them suppose to be a 1027? Cause with just power and ground connected it draws 60+ amp of current. If 1 is suppose to be the 1027 how do i tell which location it goes in? |
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23rd September 2010, 05:25 PM
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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The collectors of the PNP drivers will be directly connected to ground. Are there any drivers that don't have their collectors connected to ground?
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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23rd September 2010, 06:27 PM
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#3 |
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diyAudio Member
Join Date: Sep 2006
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I figured out the problem in the supply part.
Now im rebuilding the output section. The model number on this amp is HC4002. This amp says it will do 4000 watts @ 1ohm Which i highly doubt. How Do i figure out how much this amp really does ? |
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23rd September 2010, 07:59 PM
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#4 | |
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diyAudio Member
Join Date: May 2007
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Quote:
P=V*I 4000W = 12V(battery) * I I = 4000/12 = 333 A how big are the fuses ? 4*100A ? the power declared seems to be really. otherwise... |
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23rd September 2010, 08:45 PM
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#5 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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The only way to know how much power it will produce is to measure it.
__________________
Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links |
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