davidross222

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  • August 16, 2023 at 7:56 am in reply to: Beogram 8002 #23066
    davidross222
    BRONZE Member
      • Perth Western Australia
      • Topics Started 8
      • Total Posts 17

      Anyone know where I can get the peanut lamp (5V 60mA) used in the < > photocell control module in the keyboard. Its B&O part number is 8230069.

      Thanks

      July 4, 2023 at 1:14 pm in reply to: MMC20 Type A cartridge #21882
      davidross222
      BRONZE Member
        • Perth Western Australia
        • Topics Started 8
        • Total Posts 17

        Thanks for that.

        D

        July 3, 2023 at 3:45 am in reply to: MMC20 Type A cartridge #21845
        davidross222
        BRONZE Member
          • Perth Western Australia
          • Topics Started 8
          • Total Posts 17

          Hi Martin,

          A few pix of the mystery cartridge. Here fitted to SME on old Thorens. Then I found the arm needs fixing! So cartridge is still unused.

          In the mean time I’m concentrating on refurbishing a rusty old GR8002 with broken MMC1 from eBay.

          davidross222

          May 24, 2023 at 1:49 am in reply to: Beocord 5000 Type 49xx no sound #20748
          davidross222
          BRONZE Member
            • Perth Western Australia
            • Topics Started 8
            • Total Posts 17

            Thanks, martin. But I need to buy some gloves first, because NOTHING gets the awful stuff off your skin!

            David

            May 22, 2023 at 2:11 pm in reply to: Beocord 5000 Type 49xx no sound #20676
            davidross222
            BRONZE Member
              • Perth Western Australia
              • Topics Started 8
              • Total Posts 17

              New thread: what is best solvent to remove the gunk left by perished belts in tape drive??

              May 22, 2023 at 1:58 pm in reply to: Beocord 5000 Type 49xx no sound #20671
              davidross222
              BRONZE Member
                • Perth Western Australia
                • Topics Started 8
                • Total Posts 17

                Sorry for delay in answering, Martin! Thanks for the leads.

                Checked all voltages including 14a around Dolby board. All present. But worst possible result for fault – after reassembly it works perfectly!! Tested now with many tapes both in playback and record.

                Guess I just wait for something to show up some day … sigh

                May 16, 2023 at 11:08 am in reply to: Beocord 5000 Type 49xx no sound #20440
                davidross222
                BRONZE Member
                  • Perth Western Australia
                  • Topics Started 8
                  • Total Posts 17

                  Thanks, this deep electronics is daunting for an old bloke! But B&O have made any servicing a delight!

                  I will check voltages around the Dolby ICs.

                  And your suggestion of Vref will be done, too.

                  davidross

                  May 11, 2023 at 7:38 am in reply to: Beocord 5000 Type 49xx no sound #20255
                  davidross222
                  BRONZE Member
                    • Perth Western Australia
                    • Topics Started 8
                    • Total Posts 17

                    Thanks, TJames for your reply. Yes, opened and replaced a number of darlingtons in circuit around RL101. No VU’s on recorded tape. No change on micro pin 36 !REC.

                    May 11, 2023 at 7:34 am in reply to: Beocord 5000 Type 49xx no sound #20254
                    davidross222
                    BRONZE Member
                      • Perth Western Australia
                      • Topics Started 8
                      • Total Posts 17

                      Thanks, Dillen.

                      From the circuit I thought RL101 needs to pick for play. No, nil display on VU’s when recorded tape running.

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