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
Good morning gentlemen,
I have one of the two speaker Beolab 4000 remains with the red light, when I turn on my Beo Sound Overture only one of the two speaker comes on and goes into green light.
It could be the fuse?
The two speakers and Beo Sound have not been used for about three years, but they were new and still sealed in their original boxes.
It was a gift from my parents and only now that I bought my own house I decided to mount this wonderful sound system.
You know give me instructions to change a fuse (or video instructions manual for explanations)
thanks Stefano
Hi Stefano,
it could be a number of things - it may not be the speaker that is the problem. Are the Beolab 4000's daisychined from one Powerlink output or do the each come from their separate Output? Have you checked the Powerlink cable into the one that is red? If it isn't fully connected at either end it can cause a problem. The pins in the Powerlink output of the Ouverture could be corroded from storage. Try a bit of contact cleaner on the power link plug and move it in and out a bit.
Are you sure that the switches on the back of the BL4000 are set correctly - maybe it is accidentally switched to line?
If you swap the speaker with the green light with the second speaker, what happens?
Don't start playing about with things without checking these first. They are the common problems - especially the cables. Fuses don't tend to blow on these often - I think there are 3 in each speaker. Unlikely to be the problem.
Dave.
Dear Dave, I just came across this thread and am experiencing a similar problem. I have had this pair of BL 4000 speakers and they are really wonderful. A few years ago I changed my set-up and now just use them with Sonos through their line-in connection. I am no longer using the Powerlink system. It was working perfectly well until recently. Now one of the two speakers sometimes does not kick in when I switch on the music and, more often, starts oscillating between on and off. I don't know how the speaker switches itself on but that switch appears to be malfunctioning. Any idea what the problem may be and how to resolve it? They're great speakers and I'd really like to remedy this issue. Thanks very much for your suggestions.
"You think we can slap some oak on this thing?"
I smell foam rot.
MM
There is a tv - and there is a BV
I switched the cables and the problem remains with the same speaker. Milemissen, what do you mean with 'foam rotund what can be done about it?
Millemissen, I meant 'foam rot' before the autocorrect got to it...
Musiclover: Millemissen, I meant 'foam rot' before the autocorrect got to it...
There's a problem on older (Mk 1) BL4000 where some of the acoustic 'wadding' inside the speaker casing perishes over time and 'melts' onto the electronics, causing problems. It's mentioned elsewhere on the forum.
EDIT: See Jeff's post three down on this page: http://archivedforum2.beoworld.org/forums/t/22986.aspx?PageIndex=3
@Musiclover
Assuming that your BL4000 are 'older', this could be the reason.
You'll basicly recognize the 'older' ones by the on/off switch on the from where the red/green light is.
Not knowing whether this is the reason for your speaker misbehaving, I'd advice you to examine both speakers for the foam rot inside anyway.
More and more of these speakers suffers from this.
If you realize that the process is just starting, you can still save the speakers by removing the damp material and clean the electronic.
Even if this is not the reason yet, it is best to remove the damping material in order to prevent them for what probably would happen sooner or later - and not having to worry about this for the next many years.
@Millemissen, Thanks for all the great inputs. These are 1999 BL4000s. The on-off oscillating is relatively recent. I have opened the speaker up and the foam is indeed falling apart at any touch and is quite sticky. I have removed it the best I can. I have reassembled the speaker and now it won't get power at all, the red light doesn't even go on. I can't see anything wrong, but clearly there is. Any ideas? Thanks very much.
You will have to clean off all the sticky stuff, check the fuses, If US type F3 and F4, if EU F5, if one or more fuses are gone, check the standby transformer
Collecting Vintage B&O is not a hobby, its a lifestyle.
@Millemissen and @Soren Mexico. Thanks so much for the advice. I've extracted all the foam and cleaned the electronics carefully with some white spirit. I've been testing the speakers for the past few days and they've been working perfectly. They're great speakers. Your advice was spot-on. Thanks a lot!
Good job, you cleaned both speakers ?
Musiclover: @Millemissen, Thanks for all the great inputs. These are 1999 BL4000s. The on-off oscillating is relatively recent. I have opened the speaker up and the foam is indeed falling apart at any touch and is quite sticky. I have removed it the best I can. I have reassembled the speaker and now it won't get power at all, the red light doesn't even go on. I can't see anything wrong, but clearly there is. Any ideas? Thanks very much.
Hi "Musiclover"
I have just read this thread. I am a bit curious... on January the 28., You write that the speaker is dead, after removing the remains of the foam.Then Søren tells you to clean off all the sticky remains of the foam - and on February the 4., you write that it is now working fine. So - I would like to know: Did you only clean the Electronics, and then it worked? - or was there any blown fuses?
Hi All
I am replying to this post because I got a similar problem for my BEOLAB 4000 - S/N 13063449 bought on bay some years ago and used once twice a year as it is in my summer apartment.
I checked the cables extensively and initially I thought they were the responsible , instead finally I was able to reproduce the behavior.
I I switched off the system and leave the BEOLAB in standby for some time it does not switch on. However if I disconnect the power (from the power cable) and plug it in again it works immediately.
If I switch on/off the system in few seconds it works without any problems.
I start thinking about capacitors, but I would appreciate your suggestion and maybe a similar experience.
Regards
The foam issue happens to the newer Beolab 4000's too. They changed the big pieces of foam to a better type but they still wrapped the cables in the same foam that deteriorates with age and damages the boards. The foam falls apart and sticks to everything causing a short and the board to fail.