Question about Bose Acoustimass 15 System

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Woofer cuts out intermittently

My AM15 woofer has started cutting out intermittently. I recently moved, so it probably took some abuse. This started immediately after hooking the system up.

I managed to get the cover off and checked the fuse. Although it seemed and checked out good, I replaced it anyway. That is probably the extent of my abilities to diagnose the problem. It does one thing of note, when you move it around slowly (like stand it up on it's face (the horn) it comes on. Set it back down into it's natural position, and it cuts out again. Slight shaking seems to have no effect.

All of the speakers work fine, so it seems as if perhaps a component (in the power system) has a short of some sort. I can replace components (like a resistor, etc.), just unsure of what to test or even how. Any suggestions on what I should test or replace?

Thanks for any suggestions!

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Buy a soldering iron and go over all solder connections on the circuit board. Sounds like you have a cold or intermittent solder connection. Also make sure the problem isn't in the subwoofer cable. Don't be afraid to do a little soldering, and just make sure you don't create "bridges" between existing solder connection. Only heat the connections long enough to melt them and add a little solder, as excessive heat can destroy sensitive components. Before doing all this, remove and reinsert all related cables into their jacks several times, as these connections can become oxidized and make poor contact over time.

Posted on Dec 27, 2008

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