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Old 22nd October 2013, 11:36 AM   #1
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Default Rockford fosgate punch 200dsm

Hey guys havd a weird one just finished a rebuild on a punch 200 dsm. I wasctesting the outputs on the amp after biased the channel. History so far. Replaced all the outputs on one channel. No other problem found, but the output on the channel with no load has about 14vac before the 60hz sinewave distorts vs. The other channel outputs 20vac before it distorts. I tried swapping the output cards between the channels and no change. Swapped crossover card no change? Any thoughts?
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Old 22nd October 2013, 03:53 PM   #2
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Do you have the same rail voltage on both channels?

Is it a flat clip?

Does it clip at the top and the bottom at the same time?

Do you have a clean input signal to the board when the output begins to clip?
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Old 22nd October 2013, 08:12 PM   #3
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Perry
i have the same rail voltage on both sides.
it is not a flat clip. It is more like a saw tooth favoring one side if that make since. It is not chopped off flat more like chopped off at an angle. the output looks seems to act the same as the other channel just 1/3 less power. I think it clips at the same time i will check. the signal to the board is clean at the point of clipping.
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Old 23rd October 2013, 02:19 AM   #4
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A dirty gain pot?

Aluminum caps on the input board have been changed and are not leaking?
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Old 23rd October 2013, 11:17 AM   #5
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Post a photo of a 100Hz sine wave clipped on the weak channel with and without a load.
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Old 24th October 2013, 05:08 PM   #6
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Sean I just got a chrome power1000 with caboose. Chrome is in awesome condition. Its looks so awesome I want to keep it.
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Old 24th October 2013, 11:25 PM   #7
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Was that the broken one on ebay just a few days ago?

That was a very nice amp!!!!
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Old 25th October 2013, 10:19 AM   #8
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Yes it was and it wasn't cheap. The pictures listed didn't give it justice.
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