Bose Companion 3 Series II has a defective output channel

Rusty_Spikey

Commendable
Jan 24, 2017
4
0
1,510
0
Bose Companion 3 Series II has a defective output channel, one speaker works fine, the other speaker I can hardly hear anything out of it - the sound is very faint, I've tried changing the speakers into each output and its defo the output that is faulty......can I get any advice on how to fix it please
 
Step by step? I think I may have to charge$ for that. :)

If this was an hard failure, no sound whatsoever, I'd hope a simple blown fuse, but it's not hard failure so it's more complicated. All I can tell you is, if this was me, and for some reason I have plenty of time to kill, I would open it, (1)Vacuum, (2)Unplug all connectors, clean and re-plug, (3)look for suspect components, burnt, bulge, cold solder joints (needs pairs of trained eyes to spot).
 
Well it's very simple.

You swap L and R and if the fault follows the speaker then u know it's the speaker's fault, not the sub, not the amplifier box. Conversely, if fault reverses then you know there is something wrong with the amplifier box.

Speaker fault: suspect bad wiring. Can the speaker be disassembled, do you have a basic understanding of + and - polarity, replace wire with your own? Know about ohms, do yo have an ohm meter?

Amplifier fault: Not a whole lot you can do here, faulty electronics. If you have to ask, you can't fix.
 

Rusty_Spikey

Commendable
Jan 24, 2017
4
0
1,510
0
Like I say I've tried changing the speakers and it doesn't follow the speaker so it's not the speaker its the amp..........isn't there a youtube video or summat I can watch to help me fix this prob as there is no way I can afford to get new

could you put up a step by step on how to fix??? You seem to know what your talking about....

thanks in advance
 
Step by step? I think I may have to charge$ for that. :)

If this was an hard failure, no sound whatsoever, I'd hope a simple blown fuse, but it's not hard failure so it's more complicated. All I can tell you is, if this was me, and for some reason I have plenty of time to kill, I would open it, (1)Vacuum, (2)Unplug all connectors, clean and re-plug, (3)look for suspect components, burnt, bulge, cold solder joints (needs pairs of trained eyes to spot).
 
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