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Old 23rd February 2011, 05:19 AM   #1
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Default Memphis 16-MC1000D

I got this amp in for repair And It has 63 volts of DC on the outputs.

I checked all outputs and they test fine.

Any ideas where to start?
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Old 23rd February 2011, 05:34 AM   #2
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Are the audio driver boards in sockets or soldered directly to the main board?
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Old 23rd February 2011, 05:43 AM   #3
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They are in Sockets
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Old 23rd February 2011, 05:48 AM   #4
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Does the DC go away if you remove the boards?
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Old 23rd February 2011, 05:52 AM   #5
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Yes
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Old 23rd February 2011, 05:54 AM   #6
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Reinstall one at a time to see if the amp will produce audio with either board installed.
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Old 23rd February 2011, 06:04 AM   #7
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If i only put 1 in at a time no matter the loacation I get DC on the outputs .

I tryed both boards and both locations and Get 63 volts of DC still
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Old 23rd February 2011, 06:15 AM   #8
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What's the DC voltage on pins 9 and 11 if the 14 pin IC on the board behind the RCA jacks.
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Old 23rd February 2011, 06:19 AM   #9
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9:1.40

11:2.56
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Old 23rd February 2011, 06:21 AM   #10
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It's likely defective. Post the voltage on all of the pins.

IC#
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
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