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25th August 2009, 09:36 PM
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#1 |
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diyAudio Member
Join Date: Mar 2008
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Massive Amplifier Class D Driver Board
Need to replace What massive calls "Bass Kompressor" circuit. If anyone knows what the make is or another amp using same board let me Know. I really having problems repairing/replacing this one because Massive has the board incased in epoxy.
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25th August 2009, 09:52 PM
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#2 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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How did you determine that it was defective?
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25th August 2009, 10:24 PM
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#3 |
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diyAudio Member
Join Date: Mar 2008
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well while I'm tested all the vitals of the amp. I'm noticing I dont have my square wave on the outs(irf640's). Rails are fine. I can see the metal can seem to be lifted surrounding the drive circuit. With me O-scope still clamp on a 640 I push the metal can down. There goes my wave.I remove PCB thinking to repair cold solder joints. Solder made,no wave. I remove can epoxy is cracked surrounding drive circuit and when I push on it,amp is back to working order again. Removed drive circuit to maybe repair some traces on drive circuit itself,I find bottom of board is layerd in epoxy also and impossible to get around without doing damage to board itself.
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25th August 2009, 10:44 PM
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#4 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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OK. Let me ask around to see if I can find anyone that has one.
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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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25th August 2009, 11:22 PM
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#5 |
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diyAudio Member
Join Date: Nov 2003
Location: Louisiana
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__________________
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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