Beolab 4000 red light

13 replies
W(
Offline
Wohoo (archived2)
Bronze
Posted December 29, 2017 at 10:40 GMT
#2099372

I found a nice pair of Beolab 4000 speakers in my parents their cellar.

I tried to connect them to a sonos connect via a regular red/white cable and selected the option "line in".

Unfortunately both speakers don't react. The light remains red. I red something about foam rot, so I opened the speakers and found a sticky substance. I removed everything. Cleaned the motherboard with 99% alcohol. This didn't solve the red light issue. I assume the motherboard is too already affected by the foam rot and needs some more adjustments. 

What should I do? I prefer not spending 500 euro on repairing them. But I neither want to throw them away before I tried everything. 

Happy holidays!

And best regards

 

 

 

L(
Offline
langleyav (archived2)
Bronze
Posted December 29, 2017 at 11:03 GMT
#2099373

Make sure you actually have audio going into the speaker, as it requires audio to be present to power the speakers on.

Ron

W(
Offline
Wohoo (archived2)
Bronze
Posted December 29, 2017 at 11:12 GMT
#2099374

Thats indeed an important detail that was missing in my intro. I was playing music via the connect. 

Thanks Ron for helping me out.

Millemis
Offline
Millemis
Bronze
Posted December 29, 2017 at 11:48 GMT
#2099375

Hi Wohoo and welcome to Beoworld,

you will hardly have any luck cleaning the boards of the BL4000, if they are as affected as they usually are.

These boards are multilayered and mostly (not always) the ‘hidden’ layers are damaged too.

New boards are expensive, yes - however, if you choose to spend the money, they can serve you well for many years to come.

If you go looking for another set, be sure that they haven’t got the same damping material inside (thumb rule: look for MK2 versions).

In case of a MK1 set, at least be sure that you can open them, before buying - to see how they look inside

That they are working gives you no guarantee, that they will keep on working.....unforfunately.

MM

Location: Flensborg————Danmark

W(
Offline
Wohoo (archived2)
Bronze
Posted December 29, 2017 at 12:58 GMT
#2099376

Thanks MM, 

Where can I order those (expensive) boards? 

Best regards

MA
Offline
marexy
Silver
Posted December 29, 2017 at 15:22 GMT
#2099377

Hi

Can you show serial number ?

Beobuddy
Offline
Beobuddy
BronzeFounder
Posted December 29, 2017 at 17:11 GMT
#2099378

Send them over for repair.

No Problem.

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
Millemis
Offline
Millemis
Bronze
Posted December 29, 2017 at 22:59 GMT
#2099379

@Wohoo

This long thread could show you details on the versions of the BL4000 and shed a light on the problem ‘damping material rot’ :

/forum/general-discussion-and-questions/beolab-4000-questions---foam-rot

And do concider the offer from Beobuddy - he seems to be one of the few guys, who can handle this problem.

MM

Location: Flensborg————Danmark

W(
Offline
Wohoo (archived2)
Bronze
Posted December 30, 2017 at 08:44 GMT
#2099380

How can I contact you?

W(
Offline
Wohoo (archived2)
Bronze
Posted January 1, 2018 at 18:37 GMT
#2099381

Beobuddy wrote:

Send them over for repair.

No Problem.

Beobuddy, could you please contact me? Thanks

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