Beolab 2 Powers on but no signal

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Home Forums Product Discussion & Questions BeoLab Beolab 2 Powers on but no signal

Viewing 15 posts - 1 through 15 (of 15 total)
  • Author
    Posts
  • #38772
    mojofml
    BRONZE Member
      • Topics Started 7
      • Total Posts 24

      I picked up a very beat up Beolab 2, it powers on when plugged in (red LED), but when I plug in the powerlink cable and try to play music, there’s no sound (still red LED, does not turn green).

      I took it apart and looked at the fuse, it visually appears not blown. That’s pretty much all that I know how to do. Any common causes for said symptoms? Would the only thing that I can do be replace the board/sending it somewhere for repair? thanks!

      IMG_20220901_210055IMG_20220901_211142

      #38773
      KolfMAKER
      BRONZE Member
        • The Netherlands
        • Topics Started 28
        • Total Posts 228

        Hi mojofml,

        Do you have a multimeter and know how to handle that?

         

        #38774
        Die_Bogener
        BRONZE Member
          • Topics Started 2
          • Total Posts 243

          It is not a good idea to plug in power, having a red led and then connecting Powerlink. Can make a big PLOPP and then nothing in the future…

          Has it ever worked before, did you see or hear it or bought defect?

          #38775
          mojofml
          BRONZE Member
            • Topics Started 7
            • Total Posts 24

            I have a multimeter but I don’t know how to handle it haha

             

             

            #38776
            mojofml
            BRONZE Member
              • Topics Started 7
              • Total Posts 24

              It is not a good idea to plug in power, having a red led and then connecting Powerlink. Can make a big PLOPP and then nothing in the future… Has it ever worked before, did you see or hear it or bought defect?

              I’m sure it worked before, before I bought it

              #38777
              KolfMAKER
              BRONZE Member
                • The Netherlands
                • Topics Started 28
                • Total Posts 228

                If you don’t have/know how to handle a multimeter, try to find someone who does, and has understanding of power supplies and amplifiers.

                #38778
                9_LEE
                BRONZE Member
                  • Eastbourne England
                  • Topics Started 13
                  • Total Posts 46

                  Have you double checked your powerlink cable, or checked that whatever you have it plugged into is set up for it – or has working powerlink sockets?

                  I only ask as in 20+ years of dealing in B&O I have to say that the BeoLab 2 ranks as one of the most reliable and trouble free pieces of B&O I have ever dealt in…

                  Lee

                  #38779
                  mojofml
                  BRONZE Member
                    • Topics Started 7
                    • Total Posts 24

                    If you don’t have/know how to handle a multimeter, try to find someone who does, and has understanding of power supplies and amplifiers.

                    seems i have no other choices, will do thanks!

                    #38780
                    mojofml
                    BRONZE Member
                      • Topics Started 7
                      • Total Posts 24

                      Have you double checked your powerlink cable, or checked that whatever you have it plugged into is set up for it – or has working powerlink sockets? I only ask as in 20+ years of dealing in B&O I have to say that the BeoLab 2 ranks as one of the most reliable and trouble free pieces of B&O I have ever dealt in… Lee

                      Hi there, i’m absolutely sure there’s no issue from the signal/cable end, because I have another perfectly good working condition Beolab 2! I bought this as a gamble in hopes it would work (seller didn’t have cable to test the signal), but i guess not only is it very beat up on the outside it is also the case on the inside 🙁

                      #38781
                      mojofml
                      BRONZE Member
                        • Topics Started 7
                        • Total Posts 24

                        Found the service manual, maybe it’s the base unit that’s faulty (the front facing piece)

                        Capture

                         

                        Is there any way to test the base unit? I will not use my working condition Beolab 2 to test it 😀

                        #38782
                        mojofml
                        BRONZE Member
                          • Topics Started 7
                          • Total Posts 24

                          Just to update in case anyone interested – I used a 9v battery and connected the base unit +/- terminals and hear a mild clicking sound. I’ve also managed to source a multimeter, i’m getting an ~8ohms reading so I believe it’s working properly. Will try to test the board over the weekend as well.

                          I tried one other thing – i tried to put one of my beolab 6000 speakers through the “out” from the beolab 2, still no signal goes out to the speaker.

                          #38785
                          mojofml
                          BRONZE Member
                            • Topics Started 7
                            • Total Posts 24

                            Hmmm, the left one is ok. The right one is somehow “blocked”, there is a hard stop in the membran. Maybe it was overload or somebody crashed into the loudspeaker. Does it move by hand?

                            Yes quite noticeably something is impeding it when i press down on it, i’m trying to figure out how to take it apart. I can’t find a guide anywhere to do it, but i’m guessing I will need to unseat the spider to gain access to a few screws below it order to take it apart.

                            #38783
                            mojofml
                            BRONZE Member
                              • Topics Started 7
                              • Total Posts 24

                              I’ve finally caved and took my working Beolab 2 apart, and tried putting in the base unit from the non-working Beolab 2 into the working one, and it still did not work. The light does turn green and I do hear a very weak hum if I turn it up a lot though.

                              I’ve done the 9v battery test, and as you can see in the video the difference is very significant. What I haven’t though is to put my working Beolab 2 base unit into the non-working one to test the rest of the parts (ie. the board, amp, etc) from the non-working unit. I would like to ask, is there is any risk in putting my working base unit into the non-working Beolab 2? I don’t want to end up with 2 non-working Beolab 2.

                              Also, any chance I restoring the non-working base unit? thanks a lot.

                              #38784
                              Die_Bogener
                              BRONZE Member
                                • Topics Started 2
                                • Total Posts 243

                                Hmmm, the left one is ok.

                                The right one is somehow “blocked”, there is a hard stop in the membran. Maybe it was overload or somebody crashed into the loudspeaker.

                                Does it move by hand?

                                 

                                #38786
                                Beojuhl
                                BRONZE Member
                                  • Topics Started 0
                                  • Total Posts 2

                                  Did you manage to get it to work ?

                                Viewing 15 posts - 1 through 15 (of 15 total)
                                • You must be logged in to reply to this topic.