Beolab 8000 turn off after some hours

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Home Forums Product Discussion & Questions BeoLab Beolab 8000 turn off after some hours

Viewing 15 posts - 21 through 35 (of 35 total)
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  • #43226
    Prime
    BRONZE Member
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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?

      #43227
      carljh
      GOLD Member
        • Stockholm
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        That will work. You need a solder blow gun to remove the old one. Be careful to not rip off the solder pads from the PCB.

        #43228
        carljh
        GOLD Member
          • Stockholm
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          You only need to change IC1

          #43229
          Prime
          BRONZE Member
            • Topics Started 2
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            Left one? B0A3D9BA-7F8A-4F5F-83C2-59EF06AA1F25

            #43230
            carljh
            GOLD Member
              • Stockholm
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              Yes, that is correct. Good luck!

              #43231
              Prime
              BRONZE Member
                • Topics Started 2
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                Removed it. Waiting for the new parts.

                 

                B4049E27-6C37-4C3B-A9AE-091DC20A1AA9

                #43232
                Prime
                BRONZE Member
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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?

                  F470DE39-5B2F-47EE-A1D0-A9BAB485C315

                  #43233
                  carljh
                  GOLD Member
                    • Stockholm
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                    That was bad news! It looks ok. Strange that you get noise from it because this circuit only control the auto on detection.

                    #43234
                    franjo3000
                    BRONZE Member
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                      Hello all, I am new member, and I have a pair of Beolab 8000s with a 11xxxx serial number of which one I believe has the same issue as discussed above:

                      • when I use it with a Beolink cable, it turns on (and off) just fine
                      • when I use the LINE in, it works fine for 2-3 hours, and then turns off. It does not turn on again. (only if I change to Beolink..) When I remove the wall plug and wait until the next day, it works fine again for 2-3 hours…

                      With turning on I mean that the light switches from red to green and it plays music.

                      I have the disassembled speaker lying on my desk already as I am doing the foam replacement (thanks to this great forum!).

                      I don’t have electronic testing equipment other than a good multimeter.

                      Do you think I should be going for the IC1, too? Or any other part to consider?

                      Thank you!

                      #43235
                      marexy
                      SILVER Member
                        • Topics Started 1
                        • Total Posts 16

                        Usuly at that error there is a problem at one or more caps.

                        Noice or humm problems are related to bad IC.

                        Try to change RELE as some times rele is also bad inside.

                        all the best 🙂

                        #43236
                        franjo3000
                        BRONZE Member
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                          what do you mean by RELE?

                          #43237
                          KolfMAKER
                          BRONZE Member
                            • The Netherlands
                            • Topics Started 28
                            • Total Posts 228

                            I think @marexy means the ‘relay’.


                            @marexy
                            : which caps do you consider suspicious?

                            #43238
                            carljh
                            GOLD Member
                              • Stockholm
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                              Hi @franjo3000

                              Your problem certainly sounds exactly like the same problem I had. I bet you need to change IC1 and this will fix the problem. I used an IC1 chip from an old unit but earlier in the thread is some alternative you can buy. You need a solder blow gun to remove the old IC, be careful to not rip off the solder pads.

                              Good luck!

                              Carl

                               

                              #43239
                              KolfMAKER
                              BRONZE Member
                                • The Netherlands
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                                @Carljh

                                Thanks for this info.

                                I have a BeoLab 8000 that also has a problem when connected via RCA.

                                It sometimes does switch on (mostly not), but only when I put the input volume high.

                                Question

                                • Could this also be caused by a bad IC1?
                                #43240
                                carljh
                                GOLD Member
                                  • Stockholm
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                                  @KolfMAKER

                                  Hard to say but the IC1 belong to the circuit that turn on the amplifier when the input signal reach a threshold level.
                                  It may solve your problem if you swap the IC1.
                                  Carl

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