Question about Pyramid 2CH 1000W CRYSTAL AMP Car Audio Amplifier

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Amp power my power on the amp is nolong working. I was wonder did the amp just burn out. It was working when I left on Tuesday and when i return last night from out of town, It was fading in and out with the power. Now it just nolonger work

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Open it up and check the board and magnets on the side if it smells funny and looks like black resin its burned out

Posted on Mar 26, 2008

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Because last tuesday was after the 25th day in the month meaning all electrical items fail intermittantly, and so the 4th 50A capacitor blew (to the left of the inverted power coil)

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Amp powers up. the right channel works fine left not at all


If you didn't find any burned parts that would mean one of the buffer amplifiers before the power amp could have died. They could either be transistor based or opamp based. They are fairly low power so they will not explode like the output transistors like to do. Contact rockford, they should be able to send you a schematic. Let me know I will try to help you through it.

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This is for Ginko: Last Tuesday I described a problem with my Gateway 3520 going to "black screen" 5 secs after turn on. You analyzed a cooling fan problem. I removed the cover etc. and found that the fan...


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Amp no longer turning on


Do the speakers push out or pull in when power is applied?

If not, how did you determine that is has DC on the speaker outputs?

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This isn't usually in the satellite speakers. The amplifier is usually in the sub and these have a bad habbit of blowing/burning up. Return or replace. Pretty common in this model.

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