What power supply do you use? The Sonos Port has an audio 12v trigger. But my Sonos Connect doesnt.
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Beolab 8000 turn off after some hours
35 replies
When a BL8000 fails to start after a while then most of the times this is caused by a failing NTC, autodetection or steering of the relais.
But as it responds to a trigger signal you can eliminate the NTC and steering for the relais.
So you have to look for the culprit in the autodetection. It happens regurlarly that IC1 fails.
Most of the failing components do not have visible damage. Just with measuring you will find out. For checking the IC a scope has a preference.
But as it responds to a trigger signal you can eliminate the NTC and steering for the relais.
So you have to look for the culprit in the autodetection. It happens regurlarly that IC1 fails.
Most of the failing components do not have visible damage. Just with measuring you will find out. For checking the IC a scope has a preference.
Location: Utrecht
Quite a challenge to achieve "Less is More" while having the Beovirus.
Thanks for information @beobuddy
I will check or replace the Ic1 and check if this sort the problem.
I will check or replace the Ic1 and check if this sort the problem.
Location: Stockholm
I 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.
Thanks @BeoBuddy for the direction.
Thanks @BeoBuddy for the direction.
Location: Stockholm
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?
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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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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You can not use this component https://www.amazon.nl/-/en/JRC4558-internal-compensation-circuit-20-piece/dp/B08F53PB7C/ it is wrong foot. You need 4558 with a SOT8 foot for surface mounting. I used a 4558 from a broken unit I got from a B&O dealer but I think you can use this replacement component: https://www.electrokit.com/produkt/ne5532d-so-8-dubbel-op-amp/
Please find a service manual attached, you can find placement of the IC1 in this manual.
Please find a service manual attached, you can find placement of the IC1 in this manual.
Location: Stockholm
Location: Stockholm
I've seen boards where IC1 was "upgraded" to a OPA2134. It a rather silly exercise as IC1 only handles the signal for autodetect. The actual audio signal doesn't pass IC1 through to the amplifiers.
Every dual opamp which works with symmetrical power supply will do the job.
Every dual opamp which works with symmetrical power supply will do the job.
Location: Utrecht
Quite a challenge to achieve "Less is More" while having the Beovirus.
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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