As far as I remember BL9 led turns to orange when protection is activated.

If you are seeing no led, then maybe you have a blown fuse...

Good mornung,

 

I feel sorry with you, but maybe it's not a big thing.

If you have the service manual looking for the Fuse T 5A, this part could be blown.

The other possible causes, I hope it's not, are the power supply or the amplifieer, that's expensive, ask your dealer.

Ingo

I also believe that this isn’t a big issue.

Seems like the cables might have gotten loose. Can you try switching your speakers so that the other speaker uses the working cables as a test?

I would believe that the power cable is loose especially. Try pushing and moving it a bit. Maybe it will help. Look at the red light in the speaker if it turns on or not as you try to move the cable in it’s socket.

If it goes on and off it’s probably loose.

I believe that it’s just something like that and probably just needs re attachment easily by yourself.

Thanks for the suggestions!

I did try another power cable and another power outlet. They don't react at all. Since it happend while moving I also thought of a loose cable, but the connections are tightly held together so not much movement there.

When the power supply of my Lab4s failed, they still produced a high pitched sound and yellow pulsating LED. 

I downloaded the service manual and located the F1 fuse and it's a T5AH250VP. Had to undress the speaker and take off the "999 Module, Amplifier", what a job just to get to the fuse.

I tested it with a multimeter and it remains silent. Just went past 2 general/DIY stores but none had these fuses in stock. Is any fuse labelled T 5A good? I noticed in the shop the 'H250VP' part was never on the label..

I may have to order from a webshop and will hope it arrives soon.

dont wish to be the bearer of bad news and hope a new fuse fixes it.

 

In my case the fuse kept  blowing and a new power supply c £400 was required

dont wish to be the bearer of bad news and hope a new fuse fixes it.

 

In my case the fuse kept  blowing and a new power supply c £400 was required

It sounds a little high perhaps but I would be happy paying £400 to get these amazing speakers back working again. I suppose anything that is expensive to start with is always going to be expensive to maintain; part and parcel of buying into and owning B&O. I sold my lab 9s but miss them a lot. Best speakers from B&O I have ever owned and loved the design.

It is an interesting point about protection though. To what extent are speakers protected if one does keep increasing the volume to test how loud they can go? I always get a bit nervous to go too high but I would I like to out of curiosity. The only speakers I have now are the BV-46/BP-V1 tv speakers and my recently acquired BeoSound 2. Would the BeoSound 2 speaker cut out if I pushed it too far, and how safely?

Did 3 more shops without succes. Ordered a box of 10 fuses online, shipping was more than the fuses.

Let's hope this solves the problem, I've only had my Beolab 9s since January and I'm very much in love with them.

It's a sad day :(

Damn, I receive a pack of fuses today, but they immediately blow as soon as I plug in the power lead. There will be something else going on.

I guess I'll have to bring it to my dealer, or are there other options for repair?

Apparently, you should not pump up the volume too far, but the question is, how far is too far?