Question about Bose Lifestyle 30 System

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Slow decline in volume

My LF 30 volume slowly declines for now reason, I turn up the volume to compensate until I cannot turn it up anymore.

The only way to repair is to power off and power on the system.

I just watched a 2 hour movie, had to reset 3x.


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I'm a bit of a bose LS 30 expert myself, very closely involved with bose lifestayle reanges professionally for many years.
thers a problem on the amp module on the back of the bassbox or a problem with the CD 20 volume output being reduced over time or lastly and quite simply the remote is fualty.

in each case the problem is easy to track down.
1st. take batteries out of remote ( and any other bose remotes that may control the cd 20, ) if the problem goes, get a new remote, impossible to fix unless its obvious mechanical damege to remote.

2nd get a loaner from somebody else or the shop of either cd 20 or bassbox, ( it doesnt really matter for the purpose of the test which nor which bassbox you try, it dosent have to be perfectly acoustically matched to see if the sound is dropping., once the cables match up. ) this will eliminate the possible probelm in either remaing unit.

as far as repair is concerned. you could have a go if you wanted to mess around witha lot of baord level electronics, but once youve identified the cause of the problem i suggest get a bose authorised repair or buy a spare one second hand. ( you'll only need the faulty part complet and in tact)

whatever you do.......... don't open the bassbox, as its a few years old the chances are you'll not be able to seal it back up properly in a way that will rerproduce the same quality of sound. and even if the bassbox is not at fault you'll probably have to suffer an ugly looking repair or a new bassbox that isnt necessary.
if on the other hand if you are determined to open the bassbox, let me know and i will help you do it properly but the chances are there is nothing there causing the volume to fall, that can be repaired without building a complete replacement and lots of visits to radioshack or your local electronics shop, and i would be extremely amazed if the problem is in the bassbox.

i would bet you have a faulty remote or at worst a control voltage problem in the CD20 unit.

Posted on Mar 08, 2008


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