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ARC Audio KS300.2
ARC Audio KS300.2
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Old 28th September 2020, 05:56 PM   #1
imraneesa is offline imraneesa
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Join Date: Apr 2016
Default ARC Audio KS300.2

hi all,

The above mentines subject amp is completely dead. Found one mosfet short M3. I would like to know if anybody has schematics for this or similar amp. Thank you. Attaching picture.
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File Type: jpg 20200928_135202.jpg (958.2 KB, 26 views)
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Scope, Multimeter, soldering, desoldering, hot air, 30v 50amp DC power supply.
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Old 28th September 2020, 06:01 PM   #2
Perry Babin is offline Perry Babin  United States
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Have you emailed ARC for the diagram?
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Old 28th September 2020, 06:07 PM   #3
imraneesa is offline imraneesa
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Yes I did. They told they will not supply schematics for their products.
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Scope, Multimeter, soldering, desoldering, hot air, 30v 50amp DC power supply.
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Old 28th September 2020, 06:27 PM   #4
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
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http://www.bcae1.com/temp/clarion%20-%20apx400-2Sch.pdf
http://www.bcae1.com/temp/clarion%20-%20dpx1001.2.pdf

The manufacturers can't make up their minds if they want to support their products or not. Both Zapco and ARC were providing diagrams but now they aren't.

In the diagrams above, the 4oo is similar but has no microcontroller like you amp. The 1000 has a microcontroller that may be the same as the one in your amp.
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