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High pitched noise
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<blockquote data-quote="RobGMN" data-source="post: 8906861" data-attributes="member: 683408"><p>If it continued after you disconnected the head unit, you isolated the amp as the problem (assuming no other hardware is in the chain).</p><p>I was thinking maybe a failing power supply causing electrical noise, not making noise itself.</p><p></p><p>How much trouble would it be to pull the amp and isolate it to see if the same is happening outside of the car?</p></blockquote><p></p>
[QUOTE="RobGMN, post: 8906861, member: 683408"] If it continued after you disconnected the head unit, you isolated the amp as the problem (assuming no other hardware is in the chain). I was thinking maybe a failing power supply causing electrical noise, not making noise itself. How much trouble would it be to pull the amp and isolate it to see if the same is happening outside of the car? [/QUOTE]
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