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Old 4th June 2012, 12:44 AM   #1
timwebb is offline timwebb  United States
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Default diamond d6 1500

this amp is pulling current. the power supply was cooked. i used 47ohm resistors and irfz44. in the power supply. i removed the driver card and all output transistors. and still no luck.
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Old 4th June 2012, 03:47 AM   #2
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Do you have a clean drive signal on the gates of the power supply FETs?
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Old 4th June 2012, 04:34 AM   #3
timwebb is offline timwebb  United States
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yes i have a clean square wave and 4 volts at the gate.
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Old 4th June 2012, 05:04 AM   #4
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Did you remove the rectifiers to see if that eliminated the excessive current draw?
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Old 4th June 2012, 08:34 AM   #5
timwebb is offline timwebb  United States
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it powers up fine with them removed. it has to be in the output section..
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Old 4th June 2012, 08:50 AM   #6
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Are the rectifiers shorted?

Are they in the correct locations?
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