Question about Bose Acoustimass 15 System

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I have a bose Lifestyle 5 music center. I previoously asked what may cause no out put to the sub and was told to replace R428 on the back side of the control module (not the sub) The person stated it was under the control jack and was a flat pack resistor. OK done with that. The flat pack resistor next to it is toasted. I dont think the 330 ohm was the problem. Problem is, when I desoldered the (220ohm-270ohm???) the trace on the board has literally nothing to solder to. What does the 220ohm or 270 ohm (cant tell) attach to? I may have to run a small wire to replace the trace but cant tell where it goes

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If the circuit board has a charred area, you have another problem besides the resistor. A short or overload likely caused the resistor to burn. Probably a blown output transistor(s) or chip(s), which generally short when they fail. This creates an overload in the circuit which burns up the load resistor - probably.

Posted on Dec 28, 2008

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I cannot exactly solve this issue but I can make a comment based on investigation. Lots of people have this issue but there are very few comments to help solve the issue unfortunately.

I have the same issue and have been able eliminate various things because I have a second complete Bose Lifestyle 5 system.

It is clear the issue does not lie in the Sub and is related to the Music centre unit. I can use a second identical music centre to power my sub just fine and my broken Music centre cannot drive my second sub.

Now the issue is knowing where to track down R428 in the music centre which is the suggested fix to this issue. I have opened my unit and there are resistors various Resistors in the 400 range but no R428.

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