philips 55pus7909/12

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  • lanada
    Senior Member
    • Oct 2013
    • 50
    • Malta
    #1

    philips 55pus7909/12

    i have a philips for repair 55pus7909/12

    fault is no display but the white logo philips lit below of the screen

    No display
    No backlight
    no sound
    power supply the standby voltages are ok

    Any Help regarding this problem?

    Thanks
    Tags: None
    • EazyBone
      Badcaps Legend
      • Jun 2023
      • 1362
      • United states
      #2
      Re: philips 55pus7909/12

      Unplug tv plug back in, turn off lights take a strong flashlight on the middle of the screen and hit power on. Look for any sign of picture, if it's been 1 min and no picture, hit settings button on remote, then look for picture. Report back

        Comment

        • lanada
          Senior Member
          • Oct 2013
          • 50
          • Malta
          #3
          Re: philips 55pus7909/12

          yes i did it but no sign of picture and no backlight also.i am thinking that the tv remains stucked in standby mode.

            Comment

            • William1967
              Badcaps Veteran
              • Nov 2017
              • 217
              • Netherlands
              #4
              Re: philips 55pus7909/12

              When in stand by there must be a red light on the front. If not the backlight could be faulty but also the mainboard could be the culprit. Easy to check is the 12V on the t-con fuse and many other known voltages.

                Comment

                • lanada
                  Senior Member
                  • Oct 2013
                  • 50
                  • Malta
                  #5
                  Re: philips 55pus7909/12

                  No red lights in front but only at the lower side of the panel the philips white logo lit only.the 12v on t Con is missing on fuse .the fuse is good.i am thing the problem is on the main bord.

                  Can some one has firmware for this model?

                  55pus7909/12

                    Comment

                    • William1967
                      Badcaps Veteran
                      • Nov 2017
                      • 217
                      • Netherlands
                      #6
                      Re: philips 55pus7909/12

                      Google for "55PUS7909 firmware" and you will find a lot of links. When the mainboard is faulty I don't think that a firmware update will help. Most of the times the EMMC is at the end of it's life.

                        Comment

                        • lanada
                          Senior Member
                          • Oct 2013
                          • 50
                          • Malta
                          #7
                          Re: philips 55pus7909/12

                          Yeah William1967 i found one and a try several times with a firmware but still no luck.

                          the best way is to replace main board if customer accepts

                          Thanks a lot for your help

                          Regards
                          Lanada

                            Comment

                            • witboos@gmail.com
                              Gly-Gly
                              • Sep 2020
                              • 3
                              • south africa
                              #8
                              Re: philips 55pus7909/12

                              Hi Lanada

                              The TV main board does it have a Board Number printed on it that starts with "TP" or "RSAG" or a bar code number. If you have not come right yet help me with that and I will see how I can assist. From my experianse it seems like a powersupply fault.

                              Here is a link to follow: https://techprofet.com/philips-tv-wont-turn-on/

                              Hope there is light after this.

                              regards

                                Comment

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