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  #1  
Old 12-12-2011, 02:06 PM
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Default blown amp who can fix?

So I blew my amp by grounding one of the channels to the chassis ground. I was wondering if its fixable and who can fix it. Its an arc audio ks300.4 is it worth fixing or should I just buy a new one. The cost of a new one on ebay is 379.00 I think. The amp turns on but goes into protect and flashes. The flashing almost seems like its flashing a code. Any ideas would be helpful thanks.
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Old 12-12-2011, 02:09 PM
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Noob haha ;)
 
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Did you check your fuses

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Old 12-12-2011, 02:12 PM
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Originally Posted by drsnazzy View Post
Did you check your fuses

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fuses blown = no power
no power = amp not turning on.

His amp powers on and goes into protect.
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Old 12-12-2011, 02:19 PM
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Noob haha ;)
 
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I wasn't thinking lmao ...

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Old 12-12-2011, 02:57 PM
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Yeah I've got pretty good knowledge. I've even fixed amps before. But this is beyond me.
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Old 12-13-2011, 02:26 AM
Car audio classifieds, stereo sales, subwoofer amps mids classified caraudio, BANNED!!
 
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Pm me, I can help.

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Old 12-13-2011, 03:15 AM
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Quote:
Originally Posted by bikerdc17 View Post
So I blew my amp by grounding one of the channels to the chassis ground. I was wondering if its fixable and who can fix it. Its an arc audio ks300.4 is it worth fixing or should I just buy a new one. The cost of a new one on ebay is 379.00 I think. The amp turns on but goes into protect and flashes. The flashing almost seems like its flashing a code. Any ideas would be helpful thanks.
You blew an output transistor or several. Yes it's worth fixing. Those are good amps with good resale value.
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Old 12-13-2011, 05:51 AM
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You blew an output transistor or several. Yes it's worth fixing. Those are good amps with good resale value.
And quite possibly the gate resistors as well as the drive transistors. Don't replace the fets until you know the drive parts are ok or you will be putting another batch of fets in.

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Old 12-13-2011, 07:34 AM
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And quite possibly the gate resistors as well as the drive transistors. Don't replace the fets until you know the drive parts are ok or you will be putting another batch of fets in.

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They don't use FETs in the outputs lol. They're BJTs. They're either Sankens or TIPs. A short like that to ground probably just popped a transistor. But it's never a bad idea to make sure of course.
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Old 12-13-2011, 07:43 AM
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Not sure what was lol about my statement! The point of it was not to replace the "output device" before checking the drive circuit.

Good day.

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