Jonathan McCall

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  • in reply to: Beolab 14 Sub – IC identification needed ! #62926
    Jonathan McCall
    BRONZE Member

      Will see if I can get some later.

      in reply to: Beolab 14 Sub – IC identification needed ! #62924
      Jonathan McCall
      BRONZE Member

        Wonder if that’s the same on the 14 ? Must admit, I didn’t seem to have any mounting issues.

        How far apart are the 14 and S8 in terms of design, componentry etc ?

        in reply to: Beolab 14 Sub – IC identification needed ! #62918
        Jonathan McCall
        BRONZE Member

          Are you sorted Jacob ? Hopefully you’ve got it all working again.

          in reply to: Beolab 14 Sub – IC identification needed ! #62812
          Jonathan McCall
          BRONZE Member

            Good luck – interestingly, I found a green micro switch tucked away on the ICE board. Tried pressing it with power off and with power on, but no change. Could be that it needs to be held in for a few seconds ?

            Just surmising of course, but there must be a reason for it.

            in reply to: Beolab 14 Sub – IC identification needed ! #62810
            Jonathan McCall
            BRONZE Member

              Thanks – that’s interesting. Although I’m getting nothing.

              Could be a dicky Powerlink cable, I’ll do a continuity test on it tomorrow.

              Appreciate the help.

              Jonny

              in reply to: Beolab 14 Sub – IC identification needed ! #62807
              Jonathan McCall
              BRONZE Member

                Thanks for the quick reply. The only light I can see is a white knob type thing underneath. Bear in mind I’ve never had this working, so don’t know the functionality etc.

                Nothing lights up at the moment.

                Cheers

                Jonny

                in reply to: Beolab 14 Sub – IC identification needed ! #62804
                Jonathan McCall
                BRONZE Member

                  Hi Jacob – hope all is well. Did you get your diode swapped over ?

                  My Beolab 14 is back with me and all connected up, but no switching on from the Powerlink connector. I’m using a Powerlink to RJ45 connector, but no response from the sub.

                  I’m wondering if I’ve missed something fundamental, although all connections are connected, even that pesky ribbon cable.

                  One thing I’m wondering is whether I have a missing connection right in the middle of the ICE power module. There’s a block connector socket on the left hand side of(opposite to all the caps), approx half way up. Is yours inhabited ?

                  Another thing that’s occurred to me is whether there’s a reset switch that needs a prod ?

                  Cheers

                  Jonny

                   

                  in reply to: Beolab 14 Sub – IC identification needed ! #62441
                  Jonathan McCall
                  BRONZE Member

                    All back together – just awaiting my Powerlink to RJ45 cable so I can test it.

                    in reply to: Beolab 14 Sub – IC identification needed ! #62433
                    Jonathan McCall
                    BRONZE Member

                      Brilliant – so it’s external to the pcbs. Makes sense now.

                      Will have a look tomorrow.

                      Great team work !

                      Cheers

                      Jonny

                      in reply to: Beolab 14 Sub – IC identification needed ! #62425
                      Jonathan McCall
                      BRONZE Member

                        It’s been a while since I took the think apart and I’m progressing well on re-assembly, although I’ve hit a headscratcher I hope you can help with Jacob.

                        I have a ribbon cable, which doesn’t stretch very far and appears to be folded back on itself. I’m wondering if it goes to either of the 2 connectors shown in the pic. There’s no connector on the end, so thinking the top connector might be the one, but it really struggles to get anywhere near it, let alone slot in. It could be that the connector has come off the ribbon whilst it’s been away, but don’t think it likely.

                        Could be that the 2 connectors are redundant, as is the ribbon ?

                        All the connections on the board with the blown IC are mated up with their respective cables.

                        Cheers

                        Jonny

                         

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                        in reply to: Beolab 14 Sub – IC identification needed ! #62421
                        Jonathan McCall
                        BRONZE Member

                          And some more

                           

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                          in reply to: Beolab 14 Sub – IC identification needed ! #62416
                          Jonathan McCall
                          BRONZE Member

                            Try these for size

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                            in reply to: Beolab 14 Sub – IC identification needed ! #62396
                            Jonathan McCall
                            BRONZE Member

                              Apologies for the late reply. Sub apparently repaired (IC changed) fully checked over electronically and given a clean bill of health. I’ll hopefully be collecting it tomorrow, so will take some close ups for you.

                              Also managed to find a relatively local Beolab 2 at a sensible price to go with my 8000’s, so happy days all round.

                              If anyone wants a Beolab 14 let me know !

                              Cheers

                              Jonny

                              in reply to: Beogram 4500 (and others) main pcb question #62275
                              Jonathan McCall
                              BRONZE Member

                                Couldn’t find a ribbon cable new or used so ended up making my own solution. Learned a lot about ribbon cables and connectors along the way.
                                My ribbon cable had a pitch of 2.54mm (1/10th inch) which was used back in 89 and is still in use.
                                This allowed me to find some Molex connectors which could be soldered to the board and I now have a bespoke cable set up with detachable connectors, which will make future fiddling a lot easier.

                                Hopefully I won’t need to do too much fiddling in future, as I’m pleased to say everything now works again as it should.

                                Tracking back on, both channels working and datalink operative.

                                Happy days !

                                in reply to: Beogram 4500 (and others) main pcb question #62140
                                Jonathan McCall
                                BRONZE Member

                                  A very Happy New Year to everyone on the forum !

                                  I’m taking the opportunity of a quiet couple of hrs to try and sort my 4500. Since getting everything back together I’m having a few issues. The arm won’t track, datalink doesn’t work and I’m only getting sound on one channel.

                                  I think I may have found a culprit in the pesky ribbon cable I was talking about earlier in this thread. Two of the prongs (both outer ones) have become detached.

                                  I’m not sure what they control, but it looks like I need a new ribbon cable.

                                  Are these available anywhere ? I could get away with creating single wires in place of the broken prongs but would prefer the correct bit.

                                  Thanks in advance.

                                  Jonny

                                   

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                                  in reply to: Beogram 4500 – 3 hopefully quick questions #61647
                                  Jonathan McCall
                                  BRONZE Member

                                    Thanks Martin – will clean up the guide rods and investigate the sensor situation. The start of the record is found correctly, does that operate the same way ?

                                    in reply to: Beogram 4500 not responding to Beolink 7000 #61616
                                    Jonathan McCall
                                    BRONZE Member

                                      Many thanks – so the black wires are just for grounding ? If I’ve got them the wrong way round I may not actually have the Powerlink cable grounded ?

                                      in reply to: Beogram 4500 – 3 hopefully quick questions #61595
                                      Jonathan McCall
                                      BRONZE Member

                                        Thanks Martin – really appreciated.

                                        Tracking force set to 1.15g (SMC2) and sound fine. Holding down the > arrow to lower the tonearm worked, as my deck is a Beogram 4500.

                                        Only issue now is the stylus sits in the runout groove irrespective of what record is being played. Just like a conventional TT. It should return to the standby position ?

                                        Edit – having tried to play a full record I’m now getting another issue. Previously I’d just used the < > buttons to position the stylus and play a short bit of the record to check there was decent sound. Now, when I try and play a record from the start, the carriage doesn’t move the tonearm assembly along. It works fine with the < > buttons.

                                        I’ve used a dry lubricant Molykote D321 R on the carriage rods. Could this be binding up the whole mechanism?

                                        Cheers

                                        Jonny

                                        in reply to: Beogram 4500 tonearm height setting #61530
                                        Jonathan McCall
                                        BRONZE Member

                                          Everything back together again and working as it should. Importantly, I didn’t damage the MMC2 – which is a relief !

                                          in reply to: Beolab 14 Sub – IC identification needed ! #61482
                                          Jonathan McCall
                                          BRONZE Member

                                            Will do ! My surrounding area looked a lot less damaged than yours, so it’s good news that your components are testing ok.

                                          Viewing 20 posts - 1 through 20 (of 37 total)