Beolab 4000 not working

4 replies
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Offline
Andy Davies
Bronze
Posted October 24, 2021 at 07:01 GMT
#2159936

Hi chaps, I've had a look at some of the Beolab threads as I have a fault with one of my 4000s.  They were new in 2007 (model with LED as a light rather than a button/switch) & are linked to a pair of Beolab 8000s, which is all set up ok.

A while ago my wife heard a low pitched pop from one on start up, result that there's no LED illuminated, no signal or sound.  I've checked the mains lead & Beolink cable & they're ok.  Not sure if the problem is due to the dreaded foam issue or maybe an internal fuse that's blown.  Any advice or thoughts from anyone who's had a similar experience gratefully received.  Thanks.

Location: Brighton

B(
Offline
Bw789 (archived2)
Bronze
Posted October 24, 2021 at 10:21 GMT
#2159937

I’ve checked the service manuals on Beoworld and they have one for the 4000 mk2.

Steffen
Offline
Steffen
Gold
Posted October 25, 2021 at 21:22 GMT
#2159938

If they are from 2007 they should not have the foam issue. 

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovox.png Beovox.png
Beovision-10.png Beovision-10.png
Beosound.png Beosound.png
Beosound-5.png Beosound-5.png
Beosound-4.png Beosound-4.png
Beoplay-S3.png Beoplay-S3.png
Beoplay-A1.png Beoplay-A1.png
Beomaster.png Beomaster.png
Beocenter-2.png Beocenter-2.png
EM
Offline
Emil
Bronze
Posted October 25, 2021 at 22:28 GMT
#2159939

It might be the amplifier or amplifier board that needs to be changed. I had a problem with mine with a static or crackling noise (not completely silent as yours though). Understood from the repair shop that it was not an uncommon problem.  See this thread also /forum/general-discussion-and-questions/beolab-4000-potential-problem. 

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