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I have a bose lifestyle 20 in a 1999 Beaver motorhome and

Customer Question
recently it broke down because...
I have a bose lifestyle 20 in a 1999 Beaver motorhome and recently it broke down because the alternator had to be replaced. I was listening to the unit while waiting for the repair truck and two days later when I came to pick it up all the Zone 2 speakers were not working
JA: What's the make/model number of your stereo? How old is it?
Customer: bose lifestyle model 20
JA: What happened right before this popped up? What troubleshooting have you tried?
Customer: bought a new unit same problem
JA: Anything else you want the theater expert to know before I connect you?
Customer: unplugged the sub wolfer and the center and plugged them in an hour later same problem
Submitted: 1 year ago.Category: Home Theater-Stereo
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Answered in 6 hours by:
11/6/2016
Technician: Louie, Technician replied 1 year ago
Louie
Louie, Technician
Category: Home Theater-Stereo
Satisfied Customers: 13,026
Experience: Have been in the business 25+ yrs., down to component level.
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Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, the description of "...new unit same problem..." would indicate that the issue is not with the Lifestyle 20 but with the second Bose® powered speaker system serving as SPEAKERS for the ZONE 2. Trace and follow the wires of the plug connected to the jack 2 on the back of the music center.

Post back with the model numbers of these powered ZONE 2 speakers.

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Technician: Louie, Technician replied 1 year ago

Appreciate the picture.

Do you have a second remote control just for ZONE 2?

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Customer reply replied 1 year ago
i do have a remote
Technician: Louie, Technician replied 1 year ago

Let's do a review of the settings for the two (2) remote controls and turning On ZONE 2 using this second remote control.

Please click HERE.

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Customer reply replied 1 year ago
Did that still nothing
Technician: Louie, Technician replied 1 year ago

Interesting....

And on "... monitor says Zone 2 is OFF...", which monitor please?

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Customer reply replied 1 year ago
Monitor still says that Zone 2 is off.
There's nothing i do with the remote that turns it on..
Technician: Louie, Technician replied 1 year ago

Bear with me; have you re-checked the DIP switch settings of the second remote for ZONE 2?

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Customer reply replied 1 year ago
they are correct and when playing a CD it will pause and play but still No Sound
Technician: Louie, Technician replied 1 year ago

Can you please try posting a clear picture of the back of the music center?

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Technician: Louie, Technician replied 1 year ago

Thanks.

To where is the SERIAL DATA cable connected to please?

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Customer reply replied 1 year ago
The top one
Technician: Louie, Technician replied 1 year ago

Yes from the picture but it went to "somewhere"?

...likewise with the 2 RCA plugs to the TAPE OUT went to?

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Technician: Louie, Technician replied 1 year ago

Sorry but which is connected to the "...speakers in the back bedroom..."; the RCA-to-RCA?

or

the serial cable?

or both?

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Customer reply replied 1 year ago
The RCA cables from the back of the stereo unit to the RCA cables on the Bose system in the back bedroom
Technician: Louie, Technician replied 1 year ago

I understand; "...RCA cables from the back of the stereo unit to the RCA cables on the Bose system in the back bedroom..."

Bear with me further, but to where would the serial cable be connected to please?

I am trying to establish how the Bose Built-INvisible System 172075 is getting audio signals and turn on signals from the LS20's music center.

I am tempted to suspect that the reason ZONE 2 is OFF is because there is nothing connected to the SPEAKER ZONE 2 jack as may be seen from the second picture provided above.

Additionally, it is likely that the jewel cube speakers are not connected to the LS20's Acoustimass module.

And instead, the Acoustimass module's LEFT & RIGHT OUTPUT TO CUBE SPEAKERS are feeding the 172075's LEFT & RIGHT AUDIO INPUT.

Further, the 172075 would need a "REMOTE TURN ON" signal on its pin 4(?).

Absence of this remote turn on signal would not enable the 172075 to work hence no sound from the speakers connected to it.

Please confirm above.

Thanks.

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Technician: Louie, Technician replied 1 year ago

Sorry but the picture shows the SPEAKER ZONE 1 cable which would most likely be connected to the Acoustimass module.

The Acoustimass module does not have a jack that can fit the SERIAL DATA cable/plug.

Hence the above "...where would the serial cable be connected t..."

Or if you have a multi-meter, what is the voltage on REMOTE TURN ON pin of the 172075 ?

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Customer reply replied 1 year ago
I've tried to switch it manually by plugging into Zone 2 with the same results nothing no sound so I switched it back to Zone 1 but on the front of the unit I can also switch from Zone 1 and Zone 2 and I've tried both of those also.
I will have to wait till tomorrow to test it with the voltmeter
Technician: Louie, Technician replied 1 year ago

Yes please; tomorrow or when conveniently able.

The presence/absence of the REMOTE TURN ON voltage at the 172075 is very critical.

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Customer reply replied 1 year ago
Which terminals on that unit do you want the voltage tested on?
Technician: Louie, Technician replied 1 year ago

Based on the last picture, that would be the terminal/pin labeled as "REMOTE TURN-ON" where the blue wire would be.

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Customer reply replied 1 year ago
it's showing 120 volts to the blue wire. I used the remote to turn on the stereo unit I switched it to AM, FM, auxiliary mute and pause and everything works from the remote.
Technician: Louie, Technician replied 1 year ago

Will the "REMOTE TURN-ON" / "...120 volts to the blue wire..." change when the music center is turned OFF ?

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Customer reply replied 1 year ago
The remote works and operates everything but the SOUND
Technician: Louie, Technician replied 1 year ago

I understand.

I am hoping to determine where the fault is.

The above request for information is if the terminal/pin on the 172075 labeled as REMOTE TURN ON changes in voltage value from the earlier provided "...showing 120 volts to the blue wire..." if the music center is off.

Thanks.

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Customer reply replied 1 year ago
Keep in mind NOTHING in the wiring has been changed. EVERYTHING was working
I suspect something just needs to be reset just like when you disconnect your car battery and you have to reset the channels on the radio.. At least that is what I have been told by the repair shop. A very respectful one...
Technician: Louie, Technician replied 1 year ago

I understand.

However, I would beg to differ and suspect that the 172075 has an issue and a reset would not be corrective.

Perhaps another member can provide an alternate approach to your concern.

With your indulgence, I would now re-open the question to solicit a second opinion by opting out.

Still, good luck with the Bose.

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Customer reply replied 1 year ago
what does that mean?
Technician: Louie, Technician replied 1 year ago

Somebody else would post a reply/solution.

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Louie
Louie
Louie, Technician
Category: Home Theater-Stereo
Satisfied Customers: 13,026
13,026 Satisfied Customers
Experience: Have been in the business 25+ yrs., down to component level.

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