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Old 3rd January 2011, 06:22 AM   #21
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Follow the circuit back from the bases of the D1302s. It will likely go back through a resistor or two and possibly to an A1381 (transistor).

If that's true, follow the circuit back from the base of the A1381. What drives that transistor?
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Old 3rd January 2011, 06:23 AM   #22
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You stated that the square wave on the outputs is switching on and off. Does the current draw decrease when it's off?
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Old 3rd January 2011, 06:32 AM   #23
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NO
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Old 3rd January 2011, 06:39 AM   #24
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The base of the A1381 appears to be driven by the A1266 i removed
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Old 3rd January 2011, 06:58 AM   #25
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OPPPSSS followed the wrong leg back .

The A1381 is driven by a C1027 Transistor heres the voltages on it

Leg1:0.00
Leg2:7.25
Leg3:0.00
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Old 3rd January 2011, 06:58 AM   #26
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Have you noticed any of the FETs (audio or power supply) heating up?
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Old 3rd January 2011, 07:07 AM   #27
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No they all remain cool But i do have a limiter in line im afraid not to use it
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Old 3rd January 2011, 07:13 AM   #28
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Is the voltage on the collector of the C1027 constant?
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Old 3rd January 2011, 07:14 AM   #29
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yes
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Old 3rd January 2011, 07:22 AM   #30
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Remove the C1027. Does the square wave remain constant?

If so, is it leaky?
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