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Old 5th January 2007, 12:59 PM   #1
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Join Date: Sep 2006
Default power acoustic amp

im working on a power acoustic amp the left channel plays fine the right channel will play 5 to 10 sec's and go dead for 10 to 20 secs then play again for another 5 10 secs and shut off i checked all transistors in power supply and all the outputs all check fine wondering what i check from this point
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Old 5th January 2007, 04:47 PM   #2
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Join Date: Nov 2003
Location: Louisiana
What model amp?

Is the timing consistent (like a mute/delay circuit being engaged repeatedly) or is it random?

Is the fault in any way affected by vibration or by applying pressure to the board?

Does it use two independent power supplies supplies (not likely on a PA amp)? If so, is one supply shutting off?
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