Question about Bose Lifestyle SA-3 2-Channel Amplifier

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My Bose SA-3 indicator light is off. I tried unplugging, waiting 3 mins, and powering back up, and nothing. Is it blown?

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Posted on Jan 02, 2017

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SOURCE: Bose SA-3 Amp / Blown Fuse

The problem is not the transformer. You now have shorted output transistors at the very least. By corssing the wires you presented a zero(0) ohm impedence load to the output section. It quickly went into overload. Before the fuses had a chance to open up, the outputs fried. This unit will require new output transistors and perhaps the previous driver circuit will require parts as well. Figure on $20-$50 in parts plus hte local labor rate for the repair.

Dan

Posted on Oct 01, 2008

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SOURCE: Bose SA-3 amp and a non bose sub.. I keep blowing the amp..

How many ohms is your sub? The SA 3 Amp can only handle speaker(s) 6 ohms and greater. A lot of subs, as I understand, are 2 and 4 ohms typically. If yours is 2 or 4 ohms, then that explains it. The speaker would be "straining" your amplifier and blowing it.

Posted on Apr 18, 2010

dunnbiker
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SOURCE: how can I conrol the volume of bose sa 3 amp from the aux input ?

That would depend on the preamp. Name it. A true preamp outputs a variable signal.

It's not clear from the manual what the state of the volume output is without the VCA. Most amps default to full ON and the preamp attentuates the signal with a volume control. Try it with a signal that fades in slowly so you can intervene if it gets too loud. If it's full ON a preamp will control its volume.

Posted on May 29, 2010

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1 Answer

Sa3 bose not sound from boselink but external input yes


It depends on the Bose system you connected with the amp and the type of Bose remote you are using?Does the indicator LED at the rear of the amplifier stay solid green when you press the ON button on the remote?If not,check that your room code setting on the remote correspond with the micro switches setting at the rear of your amplifier.

Feb 08, 2013 | Bose SA3

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Where is fuse in Bose SA-3 Amp


If there is not an external round push and turn style fuse port then it is in the unit itself. You will have to take it apart.

Jan 27, 2013 | Bose Lifestyle SA-3 2-Channel Amplifier

1 Answer

Bose 3-2-1 system


I also get this problem sometimes with mine. Usually when you call Bose they suggest that you do a "hard" reset meaning you unplug the power cord from the wall and wait about one min. Then plug the unit back in and it should work.
The other thing that you can try if the system still isn't working is to check that all the wires running into and out of the sub-woofer are all plugged in and aren't loose.


If either of these two solutions don't work you can alway call Bose tech support @ 1-877-210-3782 (they are open Monday Friday: 8:30 AM 8:00 PM ET)

Apr 05, 2010 | Bose 3 2 1 GSX System

3 Answers

Bose Lifestyle 28 Sound Problem


I also get this problem sometimes with mine. Usually when you call Bose they suggest that you do a "hard" reset meaning you unplug the power cord from the wall and wait about one min. Then plug the unit back in and it should work.
The other thing that you can try if the system still isn't working is to check that all the wires running into and out of the sub-woofer are all plugged in and aren't loose.


If either of these two solutions don't work you can alway call Bose tech support @ 1-877-210-3782 (they are open Monday Friday: 8:30 AM 8:00 PM ET)

Mar 31, 2010 | Bose Lifestyle 28 System

1 Answer

We have just installed a Bose lifestyle system, with SA 2 and SA 3 amplifyer, with a second set of speakers in another room. we cannot get sound to the second room. the second remote is not responding....


Make sure you unplug your sa 2 and sa3 amplifiers after setting the codes. Wait at least 60 seconds, then plug back in. I would also unplug the in and out boselink cables as well. Once youve waited for a minute, then plug everything back in. Should work. If not, call Bose technical support. They are really great. I have 15 SA 3 amplifiers throughout my home. They are great.

Mar 21, 2010 | Bose Lifestyle SA-2 2-Channel Amplifier

1 Answer

Yes the light is under the power cord. I unpluged and waited for the light to go away. I give it about 30 min then pluged it back in. that did not work. every thing else on the same power strip works. It...


Sounds like a power supply. Look for fuses on the motherboard that could be blown. Also, you may smell a distinct smell of burnt electronic devices when you smell near PS. Good indication it is fried.

Jun 23, 2009 | Gateway 838GM (RB838GM) PC Desktop

1 Answer

Bose SA-3 Amp / Blown Fuse


The problem is not the transformer. You now have shorted output transistors at the very least. By corssing the wires you presented a zero(0) ohm impedence load to the output section. It quickly went into overload. Before the fuses had a chance to open up, the outputs fried. This unit will require new output transistors and perhaps the previous driver circuit will require parts as well. Figure on $20-$50 in parts plus hte local labor rate for the repair.

Dan

Sep 25, 2008 | Bose Lifestyle SA-3 2-Channel Amplifier

1 Answer

Bose Lifestyle 38


No reset button. Simply unplug the power cord in the rear, wait 20 seconds and power back up.

Dec 22, 2007 | Bose Lifestyle 38 System

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