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Old 09-25-2013, 10:42 AM
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Findm-Keepm Findm-Keepm is offline
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Join Date: Jun 2007
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The 36V source feeds the tuner and the audio output. Your problem probably lies in one of three things - a shorted device at the powers supply, or a short in the tuner or audio amp. Very few components to check - I'd start with Y932, C937-939, and then pull the audio output to see if the audio is pulling the 36V down if not, it is most certainly the tuner.

Cheers,
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CET-Consumer Repair and Avionics ('88)
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