Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

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  • MoTVmoProblems
    New Member
    • Jan 2013
    • 5
    • usa
    #1

    Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

    I took off the back hoping to find some bad caps but I don't see any that look suspect on either the main board or the power supply board. Is it possible for them to be bad without any visible signs? I replaced 4 on the power supply board, that i was able to find at the local radio shack, but there are many that remain untouched. The same problem happens with the clicks and the same light code after i reattach everything.

    I have already ordered a new main board and a new power supply board just in case...but they were costly so i'd rather just solder what i need to and return the boards. Also I don't think i can return either board once I open and install them, so if I install the wrong one first, i'm stuck with both boards when i only need one.

    If anyone has any ideas, let me know!

    Edit: 2006 is the year, not part of the model number
    Tags: None
    • MoTVmoProblems
      New Member
      • Jan 2013
      • 5
      • usa
      #2
      Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

      Bump =\

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK
          #3
          Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

          You can't use RadioShack capacitors in a PSU, they are the wrong type (not low ESR.)
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

            • MoTVmoProblems
              New Member
              • Jan 2013
              • 5
              • usa
              #4
              Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

              OK thanks

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

                  You can buy low-ESR capacitors from
                  http://www.digikey.com/
                  or the owner: https://www.badcaps.net/

                  Panasonic FR, FM and FC are good suggestions.
                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                    Comment

                    • MoTVmoProblems
                      New Member
                      • Jan 2013
                      • 5
                      • usa
                      #6
                      Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

                      Originally posted by tom66
                      You can buy low-ESR capacitors from
                      http://www.digikey.com/
                      or the owner: https://www.badcaps.net/

                      Panasonic FR, FM and FC are good suggestions.

                      Does it not matter which of those 3 i use?

                      Side question...I just ordered a multimeter. Does that check diodes as well? I hear those tend to go bad with the caps on the Philips tvs

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK
                          #7
                          Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

                          A multimeter can sometimes be used to test diodes if it has a diode test range, a great deal of multimeters do.

                          "FR" is the best capacitor, though FM and FC are both excellent. I would rank them from "excellent" to "very good".
                          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                            Comment

                            • MoTVmoProblems
                              New Member
                              • Jan 2013
                              • 5
                              • usa
                              #8
                              Re: Philips 42PF7421D 2006 - multiple clicks, red LED, one long one short blink

                              Originally posted by tom66
                              A multimeter can sometimes be used to test diodes if it has a diode test range, a great deal of multimeters do.

                              "FR" is the best capacitor, though FM and FC are both excellent. I would rank them from "excellent" to "very good".

                              Great info, thanks. I'll post back with results.

                                Comment

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