20 Most Recent Bose Lifestyle 12 System Questions & Answers

Carefully unsnap the speaker cover you may want to use a jewelers screwdriver or a small flat tip to assist with getting it off. Once its off unscrew the 4 screws completely and then carefully wiggle the speaker from he cube. Once the speaker is out of the way reach in the cube and reset the plastic coupling so its flush with the inside top of the cube. With both cubes on there sides and the rubber washer and swivel ring in place press the bottom cube, with your finger(s) inside the cube on the plastic couping, up into th top cube until you here or feel it snap into place. Once it snaps into place, adjust the insulation in the speaker then wiggle the speaker back into the cube and carefully put the screws back in. Once this is accomplished snap the speaker coverback on and that's it. It takes ten minutes once you get the speaker cover off.

check inside for a blown fuse.also there may be a problem with the board it's self.check to see if youre getting power through the cord and then go from there.check something electrical in the same place you plug in your bose such as a hair dryer and see if that works.if it doesn't check your fuse box for a blown fuse.

What sound are you putting into the system? Have you checked that the audio you're putting into the system works into some other device? Have you checked that you have the correct input device selected? If you have checked that the audio going into the system is working properly and you have the correct input device selected then yes, audio in but nothing out = something is broken inside.

Depends on you bose lifestyle model & tv could be a program isue..all that info is on line...this i know because i do a lot of bose

Just make sure that you are using compatible connectors and that your signals are compatible. Ie. analog out to analog audio input, digital audio to digital audio input.

It could be bad soldering joints inside the unit. If the unit is moved and comes back on then it will be definitely that! Otherwise it could be some device which is heating up due to failure and shuts down when it gets to much. When it cools down it starts working again.

well u didn't include any models # for the proton or "cubes" so all I can speak too is a simple heads up lesson about amp loading , most modern integrated amps look for a 4 ohm load for its speakers , this is saying total load , so if one was to connect say two speakers (plus to plus and minus to minus) assuming the speakers are 4 ohm already this would divide down to only 2 ohms (this would heat up the amp and affect it working ) but also if the speakers are say 8 ohms each then this divides down to 4 ohms (and the amp would see two as only one ) , also wire length between speakers counts as well , assuming most speaker rated size wire is say .023 ohms per foot this would also have to be added to the total load the amp see's , there are far more technical ways of running longer wires to other rooms but this involves impedance matching transformers and the like . so I'll not discuss them

I think it's time for you to upgrade to a new system. If not, try to see if you can get someone that's great with fixing electronics to repair it or return it to the manufacturer for a replacement.

Hello! The impendance of the "speakers" does not be "minor" of the "system" . If your system is
3 Ohms, yours speakers must be 3 Omhs too, or 4, 6, 8... Use serial or paralel conectios. Ex.: 3 Ohms +3 Ohms in series = 6 Ohms ---- 3 Ohms +3 Ohms in paralel = 1,5 Ohms.

Sorry about my bad english, I'm just speak in portuguese.

i did have encounter the same problem!!!! what i did was have the whole capacitor replace ! I didn't bother to have them check beside its will cost you less than $10 this is how a capacitor will look like http://www.allproducts.com/manufacture97/qiyu/product1.jpg . check the ( + )positive ( - )nagative by marking either one on the PCB board before you proceed! very important! good luck

Dead channel can be caused by a blown amp, disconnected wire, or the audio signal is not reaching the amp. Check it out.

There are two possible causes. First, but not very likely, a poor earth connection on a connector cable. The most likely is a failed Electrolytic Capacitor in the power supply section of the main amp. What you are hearing is the 50 to 60 hz hum of the mains electricity supply!