ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
hi,
one of my beloab 8000s switches off after a few minutes of use. After leaving the power cable out of the speaker for a while, it powers up fine again, with a green light, but then switches to the red light after a few minutes. Something thermal?
any advice appreciated!
It is a quite common problem if they are from before around year 2000, it’s the foam around the amplifier that turns into a sticky oil that causes the problem. I had the same issue with mine, a cleaning solved the problem.
Beolab 4000 some timeshave the same problem.
Søren
Thanks. I’ll give this a try. Any recommendations on what cleaner to use? The gunk seems quite thick.
In addition, can you suggest what can I use to replace the lost foam?
Thanks again.
Well I gave the speaker a clean. Removed all the foam - which had converted to a sticky black goo. Gave the circuit boards a good clean with alcohol, and re-installed.
Unfortunately the same thing is happening - powers on well enough, but about 10 mins in, the green light goes out. Restarting doesn’t make any difference until i’ve taken the power cable physically out of the speaker and left it that way for about 30mins+, powering it again, then the speaker powers up - but again only for about 10 mins
Bump... Any thoughts?
Anyone?
It sounds like you are comfortable taking your speaker apart. Have you ever used a volt meter? The schematics for the 8000 are available online, and I could help you work your way through troubleshooting.
Sources: 2x Beosound Moment • 4x Beosound Essence Mk II Speakers: 3x Beolab 8000 • 2x Beolab 6000 • 2x Beolab 3 • 3x Beolab 2 Integrated: 1x Beosound 2 • 1x Beosound Level • 4x BeoPlay M5 • 1x BeoPlay A6 Control: 16x* Essence Remote • 1x Beoremote Halo
* Yes, really! 🤦♂️
Great. That would be helpful!
I guess the help wasn’t forthcoming then.....
Hi there from New Zealand. Did you ever find the problem with your Beolab 8000 going into standby. Mine has developed the same symptom. I have taken out the amp, cleaned the gunk and no real change. I have one difference. If I disconnect from power for a day or more, it plays for all the time I am listening and once put into standby, it does not come back online. There was a solution proposed where one member had suggested soldering a wire from one end of the track to the other for the two tracks that conduct the signal for standby/wake. I did that but have not had much joy either. Any update will be most appreciated. Thanks and all the best.
similar issue here. have you found a solution? I also think that is thermal but you said cleaning it doesn't help. https://alphapharma.to/
could it be because of the cables? any updates would be appreciated. thanks
frog: I guess the help wasn’t forthcoming then.....
Well, what he probably should have written is, "take apart your speakers, look through the PCB's and find any signs of dead traces caused by the old foam, and do some measuring according to the schematics, and report back here. Then I might be able to give you some hints on what is going on"
The old foam, if left for to long, causes PCB traces to "vaporise" and causes "no-connection" problems. So you need to do some measuring with a multimeter, to check if there are any traces with missing continuity from point A to B.
A cleaning of the foam will not solve the problem, since it is not the foam that is doing short circuits or anything, but the destruction of traces instead.
Also the std.by relay could be the cause of the problems.
But, you need to do some measuring yourself before anyone can help you :)
/Weebyx
Well this was an old thread - and I did trace the fault to a track failure due to corrosion by the foam turning into gunk.
i just bridged the gap with a wire and everything fired up correctly . I replied on another thread - this is quite a common issue.
frog: Well this was an old thread - and I did trace the fault to a track failure due to corrosion by the foam turning into gunk. i just bridged the gap with a wire and everything fired up correctly . I replied on another thread - this is quite a common issue.
Sorry, did not check the date of your last statement, just the newest :) Great it was fixed.