Bush s642f factory reset

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  • Rickig
    Senior Member
    • Mar 2015
    • 112
    • England

    #1

    Bush s642f factory reset

    Finally got the set powered up but it won't tune.
    It stays on atv 901. Checked the locks and all off so want to try a factory reset but can't figure it out.
    Any body know how to do a factory reset on a bush?
  • Rickig
    Senior Member
    • Mar 2015
    • 112
    • England

    #2
    Re: Bush s642f factory reset

    Managed to do a factory reset but still not finding any freeview.
    Any suggestions

    Comment

    • jczarniak
      Senior Member
      • Oct 2015
      • 179
      • UK

      #3
      Re: Bush s642f factory reset

      Originally posted by Rickig
      Managed to do a factory reset but still not finding any freeview.
      Any suggestions
      Hi,
      I've got same TV and same problem.
      Did you managed to fix it?

      Comment

      • jczarniak
        Senior Member
        • Oct 2015
        • 179
        • UK

        #4
        Re: Bush s642f factory reset

        Originally posted by jczarniak
        Hi,
        I've got same TV and same problem.
        Did you managed to fix it?
        How to do factory reset, please?

        Comment

        • jczarniak
          Senior Member
          • Oct 2015
          • 179
          • UK

          #5
          Re: Bush s642f factory reset

          Managed to do a factory reset:
          MENU, 8, 8, 9, 3
          but still not finding any Freeview channels.
          Any suggestions?

          Comment

          • dick_barton
            Badcaps Legend
            • Aug 2015
            • 6642
            • Wales

            #6
            Re: Bush s642f factory reset

            Is it scanning for channels and saying none found?
            Willing to help but I'm no expert.

            Comment

            • jczarniak
              Senior Member
              • Oct 2015
              • 179
              • UK

              #7
              Re: Bush s642f factory reset

              Originally posted by dick_barton
              Is it scanning for channels and saying none found?
              Exactly, 0 channels found.

              Comment

              • dick_barton
                Badcaps Legend
                • Aug 2015
                • 6642
                • Wales

                #8
                Re: Bush s642f factory reset

                Have you checked the voltages on the tuner? It may have lost it's supply.
                Willing to help but I'm no expert.

                Comment

                • jczarniak
                  Senior Member
                  • Oct 2015
                  • 179
                  • UK

                  #9
                  Re: Bush s642f factory reset

                  Originally posted by dick_barton
                  Have you checked the voltages on the tuner? It may have lost it's supply.
                  Not sure how can I do that.
                  Recently changed 4 caps on power supply (4 x 470uF/35V), screen backlight was flickering. OK now but no Freeview.

                  Comment

                  • dick_barton
                    Badcaps Legend
                    • Aug 2015
                    • 6642
                    • Wales

                    #10
                    Re: Bush s642f factory reset

                    Does it have both an analogue and Digital tuner. If so are you auto tuning the Digital channels
                    Willing to help but I'm no expert.

                    Comment

                    • jczarniak
                      Senior Member
                      • Oct 2015
                      • 179
                      • UK

                      #11
                      Re: Bush s642f factory reset

                      Originally posted by dick_barton
                      Does it have both an analogue and Digital tuner. If so are you auto tuning the Digital channels
                      Has got both tuners.
                      I'm auto tuning both, tried separately also.
                      Result is 0 channels found for both tuners.

                      Comment

                      • dick_barton
                        Badcaps Legend
                        • Aug 2015
                        • 6642
                        • Wales

                        #12
                        Re: Bush s642f factory reset

                        Have you got a schematic?

                        Can I assume that all the other inputs are working?

                        Does it say "XX Channels found" but just not storing them?
                        Last edited by dick_barton; 03-23-2016, 06:28 AM.
                        Willing to help but I'm no expert.

                        Comment

                        • jczarniak
                          Senior Member
                          • Oct 2015
                          • 179
                          • UK

                          #13
                          Re: Bush s642f factory reset

                          No schematic.
                          All inputs are working.
                          It say: 0 Channels found

                          Comment

                          • dick_barton
                            Badcaps Legend
                            • Aug 2015
                            • 6642
                            • Wales

                            #14
                            Re: Bush s642f factory reset

                            Can you guarantee that you have a strong signal from your aerial. Have you plugged the aerial into another set to be certain it's not an aerial/aerial cable fault.
                            Willing to help but I'm no expert.

                            Comment

                            • jczarniak
                              Senior Member
                              • Oct 2015
                              • 179
                              • UK

                              #15
                              Re: Bush s642f factory reset

                              Yes, aerial is fine, working absolutely fine on other TV.

                              Comment

                              • dick_barton
                                Badcaps Legend
                                • Aug 2015
                                • 6642
                                • Wales

                                #16
                                Re: Bush s642f factory reset

                                Can you supply a sharp photo of the power supply connector showing any legend alongside giving the voltages read.

                                Can you also supply a photo of the main board.
                                Willing to help but I'm no expert.

                                Comment

                                • dick_barton
                                  Badcaps Legend
                                  • Aug 2015
                                  • 6642
                                  • Wales

                                  #17
                                  Re: Bush s642f factory reset

                                  There appears to be a 5V regulator feeding the tuner and several metal oxide resistors around the tuner you could check out.
                                  Attached Files
                                  Willing to help but I'm no expert.

                                  Comment

                                  • jczarniak
                                    Senior Member
                                    • Oct 2015
                                    • 179
                                    • UK

                                    #18
                                    Re: Bush s642f factory reset

                                    Originally posted by dick_barton
                                    There appears to be a 5V regulator feeding the tuner and several metal oxide resistors around the tuner you could check out.
                                    Good idea.
                                    I'll check that.

                                    Comment

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