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-   -   TMA T1000.1 (http://www.diyaudio.com/forums/car-audio/212545-tma-t1000-1-a.html)

mike49504 12th May 2012 04:45 PM

TMA T1000.1
 
1 Attachment(s)
Whats the likely hood of this output filter inductor still being good ?

Perry Babin 12th May 2012 05:03 PM

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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