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Beolab 8000 no sound

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larseny
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larseny posted on Fri, Jul 10 2015 11:28 AM

Hi.

I have a pair of Beolab 8000 speakers connected through a Beolab 2 to my Beosound 5 Encore.

One of the speakers suddenly started dropping out, and when doing so the LEd light turned orange. After a few power off and on and disconnecting power, it went back to working, only to next time do the same.

Now however, it only displays red light in standby and green light when turned on, however NO SOUND!

I thought when green light is on, all is OK, but obviously green light can be on and no sound comes out. I have switched back and forth on cables etc, so I know both outputs on the Beolab 2 are OK, so it is definitely the 8000 that's got a problem.

Any syggestions anyone? Fuses or something else.

This part of the world (UAE) is not the best to get these speakers fixed but if push comes to shove I will pack in my car and drive to Dubai to the dealer.

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marc
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Answered (Verified) marc replied on Mon, Jul 3 2017 9:19 AM
Verified by frog

I had the same problem a few weeks ago,'

When red and green LED work and no sound, the relais that powers the amp is not working, on 2 occasions the print traces on the bottom of the supply print where corroded of the print due to foamrot, soldered 2 wires to the relais instead of the traces and all was well!

(and replaced the foam!!!!)

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larseny
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I would love to, but unfortunately I am currently working in Abu Dhabi in the United Arab Emirates so that would be cost prohibitive to send them.

The local Dubai B&O guys just ran away scared, but one of them suggested it was not the amps, it is either something simple as a fuse or the relay.

frog
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frog replied on Wed, Apr 25 2018 7:59 PM

Good tip from Marc, had the same problem; orange light for a while, so cleaned out the foam. Light went back to red, but no sound, so checked the relay and one track was looking ropey - quick check with a meter confirmed that the track running around the edge of the board was corroded as I was getting no connection between the relay and the connector.

Quick solder of a wire and job done!

tournedos
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frog:
Light went back to red, but no sound, so checked the relay and one track was looking ropey - quick check with a meter confirmed that the track running around the edge of the board was corroded as I was getting no connection between the relay and the connector.

Mine had exactly the same problem. The track didn't look corroded though, but the coating of the PCB appeared to have a small scratch near the corner. Perhaps the protective laqcuer had a small imperfection from new, and that was the spot first attacked by the decaying foam.

You should hear the relay click when you plug the speaker into mains.

--mika

IndyBoy1007
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Hi I'm awaiting my BL8000s and one of the speakers has had this repair done already however I want to be pro active for the 2nd one and do it myself - what did you use to actually clean out the sticky mess and where can I find out to open the casing?

Thank you in advance!!

 

:)

new to the game - awaiting my first BL 8000s MK1 Lets have a Party !!!

marc
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marc replied on Tue, Aug 28 2018 4:44 PM

the foam in the speakers can be vacuumed out with a hoover.

the sticky mess wil disolve in methyl alcohol, dirty job but someone's got to do it!☺☺☺

gerard
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gerard replied on Thu, Aug 30 2018 12:34 PM
Hi IndyBoy

for the removal, take a look at may threat here: https://forum.beoworld.org/forums/t/34724.aspx

Some help is also provided by the service manual which you can find in the download section here are 3 pictures from it:

The second picture shows 10 screws for the amp modul, but there are only 6 , 2x3 on the borders, as seen in the third picture.

bestbuy1111
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My beolab 8000 is purchased in Japan and shipped to Vietnam. It uses 100vol electricity but I plugged wrongly into 220vol. now it is no sound even though the signal light is still turning green when playing music. How to fix it? please help me


bestbuy1111
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My beolab 8000 is purchased in Japan and shipped to Vietnam. It uses 100vol electricity but I plugged wrongly into 220vol. now it is no sound even though the signal light is still turning green when playing music. How to fix it? please help me


bestbuy1111
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tôiI want to buy

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