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Old 6th November 2012, 12:02 AM   #81
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Join Date: Jun 2012
Back to this amp i talked to the owner and he asked if i could take another look at this amp..

Heres what i have for voltages in the power supply section..

Just wondering if someone could verify the voltages are correct or if there is a problem..


UC3526

Pin 1:4.98
Pin 2:4.98
Pin 3:1.24
Pin 4:4.62
Pin 5:4.98
Pin 6:0
Pin 7:0
Pin 8:4.97
Pin 9:3.58
Pin 10:2.09
Pin 11:0
Pin 12:4.98
Pin 13:0.64
Pin 14:14.56
Pin 15:0
Pin 16:0.60
Pin 17:14.55
Pin 18:4.98


Power supply fets

Gate leg:0.78
Drain:13.85
Source:0

U3 LM339

Pin 1:9.41
Pin 2:14.48
Pin 3:14.98
Pin 4:0.30
Pin 5:0.17
Pin 6:0.00
Pin 7:4.98
Pin 8:0.58
Pin 9:9.78
Pin 10:0.21
Pin 11:1.00
Pin 12:0.00
Pin 13:0.40
Pin 14:4.97

U2 LM339
Pin 1:2.53
Pin 2:9.71
Pin 3:14.46
Pin 4:0.10
Pin 5:1.51
Pin 6:4.98
Pin 7:11.66
Pin 8:4.38
Pin 9:4.98
Pin 10:4.98
Pin 11:8.25
Pin 12:0
Pin 13:0
Pin 14:11.06
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Old 6th November 2012, 12:09 AM   #82
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Join Date: Nov 2003
Location: Louisiana
Is there a question about the operation of the power supply? It appears to be producing rail voltage.
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Old 6th November 2012, 01:17 AM   #83
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Join Date: Jun 2012
Just wondering if it appears the power supply is working correctly to rule that out as a problem since i have distorted output in this amp
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Old 6th November 2012, 04:20 AM   #84
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Join Date: Nov 2003
Location: Louisiana
Please restate the problem with the amp. I think there was some confusion previously. Didn't you say that it cleared up when you touched your finger across some of the components?
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