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Old 12th May 2012, 03:45 PM   #1
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Default TMA T1000.1

Whats the likely hood of this output filter inductor still being good ?
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Old 12th May 2012, 04:03 PM   #2
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The inductor as a whole has definitely failed. The cores have likely overheated and become unusable. I've repaired a couple of these and the inductors are a definite weak point. A contributing factor in their failure may be a shift downward in the carrier frequency. It should be (from what I've seen in working amps of this type) approximately 80-90kHz. If it's significantly lower, there is likely a fault in the drive module. When this happens, the filter capacitors often fail.
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