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Old 28th September 2012, 06:18 PM   #21
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C108: -0.064 vdc
C110: -15.41 vdc
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Old 28th September 2012, 06:29 PM   #22
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Post the DC voltage on all pins of U102.

Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
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Old 28th September 2012, 07:14 PM   #23
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[QUOTE=Perry Babin;3182707]Post the DC voltage on all pins of U102.

Pin 1: -15.47
Pin 2: -9.74
Pin 3: -9.74
Pin 4: -17.41
Pin 5: -9.46
Pin 6: -9.46
Pin 7: -15.02
Pin 8: +27.08
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Old 28th September 2012, 07:29 PM   #24
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What is the DC voltage on the RCA shield?

Make sure that the shield connections are intact.
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Old 28th September 2012, 07:38 PM   #25
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0.013 vdc
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Old 28th September 2012, 07:45 PM   #26
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Find R115. Do you have -10v on one end and 0v on the other end of it?
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Old 29th September 2012, 03:51 AM   #27
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yes
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Old 29th September 2012, 05:35 AM   #28
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Check the components around Q12 (the +15v regulator). If they're within tolerance, post the voltage on all 3 legs of that regulator.
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Old 29th September 2012, 06:19 AM   #29
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R33 was out of tolerance i changed it.

The regulator reads as follows:

Vin: 29.24
Vout: 17.53
adj: 16.27
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Old 29th September 2012, 06:30 AM   #30
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With all of the components in the circuit, do you still have DC offset on the outputs?
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