Subwoofer automatically turns off after 5 10 mins

[msankadi]

Hi

I have a Boston acoustics sound ware xs 5.1 speaker system and using the subwoofer that came with it.

A few months back the subwoofer had failed where it would just show red light and not power on. I had got it fixed in bangalore through Arun (I think that was his name)

Now recently the subwoofer had started acting weirdly again. It works for 5 10 mins and again switches off by itself. If I switch off and then switch on it starts working immediately but the same cycle repeats and it stops working in few mins.

Any ideas what could be going wrong?

 

[msankadi]

Any help?

 

[pkhammu2005]

Is it in Auto ON mode. If so keep that Off.
If still the issue is ther,then must be some loose connection in the motherboard. Get it checked

 

[highfidelity]

It could be the relay is bad.

 

[msankadi]

Is it in Auto ON mode. If so keep that Off.
If still the issue is ther,then must be some loose connection in the motherboard. Get it checked

I checked the back of the sub but I couldn't find any setting called auto mode. There is just a power switch and when the sun goes in standby the light turns red, when in use it turns green. The switch is in on position. Light turns green for first 5 10 mins when sub is switched on and it works fine. It turns red in a few mins and need to off on again to restore Power

 

[msankadi]

At a loss here...I tried playing songs today for 2-3 hours and it worked perfectly...however last night it was showing this behavior

Yesterday morning was fine...night was not good...for the sub

Still experimenting to see what has gone wrong - Looks like it is a day/night cycle

 

[amrutmhatre90]

At a loss here...I tried playing songs today for 2-3 hours and it worked perfectly...however last night it was showing this behavior

Yesterday morning was fine...night was not good...for the sub

Still experimenting to see what has gone wrong - Looks like it is a day/night cycle

Can you tell which subwoofer is this?

This could be with movies, when it senses no LFE signal for 2-3 minutes it might be going into standby mode.

When playing music the LFE is always passed on certain tracks.

 

[msankadi]

Can you tell which subwoofer is this?

This could be with movies, when it senses no LFE signal for 2-3 minutes it might be going into standby mode.

When playing music the LFE is always passed on certain tracks.

I have a boston acoustics soundware xs 5.1 package and this came with it...I am not sure about other details of the subwoofer

The behavior so far all has been on music only. It does look like it is going into standby mode. I tried changing sources - Spotify via CC and Tidal via Jriver - When it happens it happens with both - When it doesn't it doesn't happen with both

My avr is yamaha 3072

 

[amrutmhatre90]

It's better to get checked, both the AVR and sub.

My friend had a similar problem, due to electricity fluctuations and powercuts both AVR and Sub had problems. Sub was not getting activated.
He used to keep them on standby.

 

[msankadi]

Did testing at my end wanted to make sure there is an issue before sending it... Turns out it was a power issue caused because of how I had the sub connected.

I had the power connected to an extension cord -> ups - >stabilizer

I removed the extension cord from this chain and connected directly to the ups and now the sub doesn't switch off on its own apart from actual standby... So. Glad that it is not a sub issue.. Learnt a new thing didn't know such a thing can happen because of an extension cord (gm)

 

[steev]

Hi

I have a Boston acoustics sound ware xs 5.1 speaker system and using the subwoofer that came with it.

A few months back the subwoofer had failed where it would just show red light and not power on. I had got it fixed in bangalore through Arun (I think that was his name)

Now recently the subwoofer had started acting weirdly again. It works for 5 10 mins and again switches off by itself. If I switch off and then switch on it starts working immediately but the same cycle repeats and it stops working in few mins.

Any ideas what could be going wrong?

Hi

Could you please give contact details of the person who initially repaired?

 

[mail2sumanth]

Did testing at my end wanted to make sure there is an issue before sending it... Turns out it was a power issue caused because of how I had the sub connected.

I had the power connected to an extension cord -> ups - >stabilizer

I removed the extension cord from this chain and connected directly to the ups and now the sub doesn't switch off on its own apart from actual standby... So. Glad that it is not a sub issue.. Learnt a new thing didn't know such a thing can happen because of an extension cord (gm)

Glad you found the root cause. . This happened to me once but it was a RCA cable issue. Cable was bad and it drops the signal which forces thesub to go standby.

 

[Wooolfsounds.com]

I had a similar issue with a Boston Acoustics Soundware XS sub I bought cheap, second hand: turned off after a few minutes, then would not come out of standby unless I turned it off for a minute and turned it back on. Went in standby mode regardless of audio input being present or not.

I opened it up and identified the small PCB perpendicular to the input board as the input sensing circuit.
Testing the pins that connect the sensing pcb to the analog input pcb.
I noticed that after touching the last pin with a test probe (the one closest to the 3 pin white connector with black leads), the sub came out of standby mode. Connecting it to ground thru a 100k / 1k resistor did not help, though.
Then pin 2 on the other side of the series of pins showed a voltage slowly dropping from 5V to 2V before it went back to standby mode, then it stayed at 2V until I woke it up again with the other pin, then it went back to 5V, slowly dropping.
The pin next to it has a constant voltage of 5V, so I connected those 2 pins with a 100k resistor to stop the voltage on pin 2 from dropping.

Now the sub stays on, does not go to standby mode. (Still to test if it goes in standby without audio input)

Hope this can help others as a bypass trick for the input sensing circuit.

 

[hardcore_gamer99]

Hi

I have a Boston acoustics sound ware xs 5.1 speaker system and using the subwoofer that came with it.

A few months back the subwoofer had failed where it would just show red light and not power on. I had got it fixed in bangalore through Arun (I think that was his name)

Now recently the subwoofer had started acting weirdly again. It works for 5 10 mins and again switches off by itself. If I switch off and then switch on it starts working immediately but the same cycle repeats and it stops working in few mins.

Any ideas what could be going wrong?

are you using powerstrip if not make sure wall sockets have sub cable snug fit i also got havells elegant series installed as normal ones had loose connection

 

[Owenrelfe]

I had a similar issue with a Boston Acoustics Soundware XS sub I bought cheap, second hand: turned off after a few minutes, then would not come out of standby unless I turned it off for a minute and turned it back on. Went in standby mode regardless of audio input being present or not.

I opened it up and identified the small PCB perpendicular to the input board as the input sensing circuit.
Testing the pins that connect the sensing pcb to the analog input pcb.
I noticed that after touching the last pin with a test probe (the one closest to the 3 pin white connector with black leads), the sub came out of standby mode. Connecting it to ground thru a 100k / 1k resistor did not help, though.
Then pin 2 on the other side of the series of pins showed a voltage slowly dropping from 5V to 2V before it went back to standby mode, then it stayed at 2V until I woke it up again with the other pin, then it went back to 5V, slowly dropping.
The pin next to it has a constant voltage of 5V, so I connected those 2 pins with a 100k resistor to stop the voltage on pin 2 from dropping.

Now the sub stays on, does not go to standby mode. (Still to test if it goes in standby without audio input)

Hope this can help others as a bypass trick for the input sensing circuit.

Hi Woolfsounds. Could you post any pictures? Just opened mine up, same issue. Might have become more terminal now as it’s stopped clicking altogether. I can see the black connector and sensing circuit but unsure of pins after that