Kicker KX1200.1 Class D blown - diyAudio
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Old 31st January 2010, 07:03 PM   #1
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Default Kicker KX1200.1 Class D blown

Just ran into one of these, it has U508 burned and blown, along with R333, R233, and R559.

Someone has been into this thing before, all the outputs have been replaced by someone else along with the 2 drivers and a few more resistors.

They forgot to do these parts i guess.

Here is the problem. the resistors are burnt beyond recognition so i cant figure out what the values are.

Also the U508 are one of the ICs with the scratched off numbers, but the IC is fried and blown. Does anyone know what this IC is?
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Old 31st January 2010, 07:11 PM   #2
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R559 = 1k
R333 = 180
R233 = 180
U508 = LM361
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Old 31st January 2010, 07:16 PM   #3
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ok. I just found R323 blown. what is it?
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Old 31st January 2010, 07:20 PM   #4
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Also need R303, R223, R203 along with R323 as requested.
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Old 31st January 2010, 07:24 PM   #5
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223, 323 = 120 ohm 1%

203, 303 = 220 ohm 1%
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Old 2nd February 2010, 03:37 AM   #6
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k. parts are on order, hopefully she will be an easy fix... anything i should watch out for?
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Old 2nd February 2010, 07:30 AM   #7
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While the LM361 is out of the circuit and after replacing all known defective components, connect a jumper between the two points indicated on the attached photo. When you power the amp up, there should be absolutely no DC on the center legs of the outputs.
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File Type: jpg IMG_5171kickerjumper.jpg (174.7 KB, 103 views)
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Old 2nd February 2010, 06:51 PM   #8
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the amp came onwith defective components before, just no audio.
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Old 3rd February 2010, 12:30 PM   #9
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perry i sent you a PM...
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Old 5th February 2010, 04:00 AM   #10
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Changed those parts and shes boomin again....
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