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Old 10th January 2012, 02:17 AM   #11
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Is the output distorted?
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Old 10th January 2012, 02:20 AM   #12
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I dont know, with 36vdc on the channel I cant hook up a speaker and it throws my reading right off the scope screen.
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Old 10th January 2012, 02:23 AM   #13
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Is that +36v or -36v with the black probe on the amp ground?
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Old 10th January 2012, 02:25 AM   #14
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-35.68 left front negative bridging terminal
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Old 10th January 2012, 02:36 AM   #15
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What's the DC voltage with the black probe on the source of Q110 and the red probe on the gate of Q110?
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Old 10th January 2012, 02:44 AM   #16
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+24.64 vdc black probe on source red probe on gate of Q110

Measuring Q118 and Q111 same probe configuration I only get - 0.311 on both.

I believe it is Q103 getting hot and R120 is discolored but still reads 300 ohms.
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Old 10th January 2012, 02:46 AM   #17
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Lift Q105 and Q106?

Does the DC go away? You may have to touch the terminals with a load to discharge the voltage.

Does anything get hot?

Is Q106 leaking?
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Old 10th January 2012, 03:00 AM   #18
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It actually increased the DC to -35.77 vdc

Nothing seems to get hot

Q106 was already replaced

I replaced every smd transistor and diode in this section because they were all missing.
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Old 10th January 2012, 03:22 AM   #19
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What's the DC voltage from source to gate on Q110 now?
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Old 10th January 2012, 03:32 AM   #20
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+22.97
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