Question about Bose Lifestyle SA-3 System

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No power Have no power and i'm looking for a service manual. Thanks in advance

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Looking for an instruction manaul download. Lost mine, just moved & can't remember which wire goes where! Thanks in advance!

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A little testing is required to nail this down.

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It is likely that either the power supply for the phantom power or the supply for the mic pre-amp IC has failed or the IC itself has failed. If a standard mic works, then it is the phantom power supply that is faulty.

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If you can update this with the test results, perhaps we can walk through this repair.


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Sony DAV C450 No Power - Dead Unit

I am having this same problem. I have checked all fuses and all seem ok. Does anyone know what else might be keeping this from powering on? Any common problems that this one had to cause this? Also does anyone have a diagram of the schematics or the service manual?
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I was wondering if you have looked through your service manual or owners manual for troubleshooting the problem. If not you can get service manuals online at Quinn

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