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I installed it. It turns on but the speaker is unusable. A lot of noise is coming from it even when there is nothing plugged in and it only is powered on.

did I miss something?

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Removed it. Waiting for the new parts.

 

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Left one? 

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I see the IC1 and IC2 in your diagram. But in another scheme Ive seen, they were both called IC1? Do I need to replace both, or only the left one?

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Is this the correct one? https://www.reichelt.nl/nl/nl/op-amp-so-8-ne-4558-d-smd-p18790.html?&nbc=1

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Edit: I found them. Can I replace them with these: https://www.amazon.nl/-/en/JRC4558-internal-compensation-circuit-20-piece/dp/B08F53PB7C/

Iv’e read online that these can be upgraded. Is it really needed, or is it better to just use these 4558 OP amps?

I think you mean this? Where can I find this on the board?

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 changed the IC1 OP amp circuit yesterday and now it work. The type is 4558 and this can be hard to find but there are alternatives.

Where can I find the IC1 OP amp circuit? And what did you buy to replace it?

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Hi, where can I find this OC1 ? And where did you get your replacements?

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Sadly my autostart doesn’t work anymore on the line in 🙁

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What power supply do you use? The Sonos Port has an audio 12v trigger. But my Sonos Connect doesnt.

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carljh wrote:

I made some more testing yesterday and realised that I connected the wrong pin in the DIN connector for the 5V power on activation signal. When the speaker get into the error stage after some hours it is possible to turn it on by 5V on pin 4 in the DIN connector. I assume this mean that the error is in the autostart circuit so I will look there, see attached picture I found in another post.

Did you have any luck yet? I dimsmantled everything and cleaned it. didnt find anything weird. I reassembled everything again but no luck.

I’m not sure which part I need to check, or replace to get that LINE input working again.

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carljh wrote:

Interesting, I got the exact same problem! You can check my post here: https://forum.beoworld.org/forums/topic/beolab-8000-turn-off-after-some-hours/

Thats a coincidence, seems like the same problem indeed. Did you find anything yet? I removed the amp, but I cant see anything on first sight. I think I need to assemble it again and do some measuring when its powered and in standby.

Ill also try if I have the same problem using a Powerlink adapter to RCA.

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