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philips 32pfl5507k/12

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    philips 32pfl5507k/12

    Hi, for philips i need service manual.
    I have problem with power supplay DPS-98EP A
    I change fuse and TK13A65U. But not have voltage 12V only 3.3V.

    #2
    Re: philips 32pfl5507k/12

    Have a look at
    https://english.electronica-pt.com/e...=32PFL5507K/12
    Willing to help but I'm no expert.

    Comment


      #3
      Re: philips 32pfl5507k/12

      I already found it. i have ERROR CODES - LED BLINKING CODES.
      4s pause and 3 fast flashing led blinking. I can't find this error.

      Comment


        #4
        Re: philips 32pfl5507k/12

        Why do you need error codes if you know the problem?
        I assume no responsibility for any stupid suggestions I might post.

        Comment


          #5
          Re: philips 32pfl5507k/12

          when connected to the power supply, red led blinking. (4s pause and 3 fast flashing led)
          Voltage is only 3.3V.

          Comment


            #6
            Re: philips 32pfl5507k/12

            Where is TK13A65U in the circuit? is it in the standby, pfc or main circuit?
            Usually when a mosfet like this shorts it opens the source resistor and can damage the drive ic as well.

            Comment


              #7
              Re: philips 32pfl5507k/12

              Originally posted by R_J View Post
              Where is TK13A65U in the circuit? is it in the standby, pfc or main circuit?
              Usually when a mosfet like this shorts it opens the source resistor and can damage the drive ic as well.
              i can't find it in the service manual.
              Attached Files

              Comment


                #8
                Re: philips 32pfl5507k/12

                The service manual does not have the dps-98ep schematic. That does look like the main mosfet that drives the main transformer. There is a resistor R611 0.24Ω (mosfet source) located beside that heatsink, check that it is not open, I expect that it is open. If R611 is open, check R610 as well, it connects the mosfet source to ic601'a CS pin.
                Last edited by R_J; 01-17-2022, 04:07 PM.

                Comment


                  #9
                  Re: philips 32pfl5507k/12

                  Originally posted by R_J View Post
                  The service manual does not have the dps-98ep schematic. That does look like the main mosfet that drives the main transformer. There is a resistor R611 0.24Ω (mosfet source) located beside that heatsink, check that it is not open, I expect that it is open. If R611 is open, check R610 as well, it connects the mosfet source to ic601'a CS pin.
                  I marked it wrong, TK13A65U is located on the second aluminum plate.
                  Attached Files

                  Comment


                    #10
                    Re: philips 32pfl5507k/12

                    What is its board location number? that looks to be a Diode (D120)?
                    Do you have any voltage across C700A or C120A? (I'm not sure of the numbers).

                    If it was indeed a mosfet I suspect it is used to switch a voltage
                    Last edited by R_J; 01-18-2022, 04:38 PM.

                    Comment


                      #11
                      Re: philips 32pfl5507k/12

                      Originally posted by R_J View Post
                      What is its board location number? that looks to be a Diode (D120)?
                      Do you have any voltage across C700A or C120A? (I'm not sure of the numbers).

                      If it was indeed a mosfet I suspect it is used to switch a voltage
                      No voltage on c120 and mosfet.
                      The problem is on the primary of the transformer
                      IC 601 may not work. How can I check the operation of the transformer.
                      Attached Files

                      Comment


                        #12
                        Re: philips 32pfl5507k/12

                        Originally posted by StromarMiki View Post
                        No voltage on c120 and mosfet.
                        The problem is on the primary of the transformer
                        IC 601 may not work. How can I check the operation of the transformer.
                        Check R611 0.24 resistor and see if it is open What is the number on Q601 AND IC601?
                        Last edited by R_J; 01-23-2022, 12:16 PM.

                        Comment


                          #13
                          Re: philips 32pfl5507k/12

                          Originally posted by R_J View Post
                          Check R611 0.24 resistor and see if it is open What is the number on Q601 AND IC601?
                          R611 is good-closed, Q601 is good, ic601 2QS02G

                          Comment


                            #14
                            Re: philips 32pfl5507k/12

                            Do you have vcc voltage (20v) on pin7 of ic601? be careful not to short the ic pins. There is a resistor connected to pin7, check the voltage there instead of on the ic.

                            I suspect there is no vcc and the supply for the vcc comes from the standby circuit.

                            I am starting to think there is no power on signal from the main board. I suspect PC903 is the optocoupler that turns on the power supply
                            CN4 pin 2 standby should be the power supply on. With CN4 disconnected from the main board, connect pin 1 (3.3v) to pin 2 (standby) and see if you get your 12 volts.
                            Last edited by R_J; 01-23-2022, 08:48 PM.

                            Comment


                              #15
                              Re: philips 32pfl5507k/12

                              Originally posted by R_J View Post
                              Do you have vcc voltage (20v) on pin7 of ic601? be careful not to short the ic pins. There is a resistor connected to pin7, check the voltage there instead of on the ic.

                              I suspect there is no vcc and the supply for the vcc comes from the standby circuit.

                              I am starting to think there is no power on signal from the main board. I suspect PC903 is the optocoupler that turns on the power supply
                              CN4 pin 2 standby should be the power supply on. With CN4 disconnected from the main board, connect pin 1 (3.3v) to pin 2 (standby) and see if you get your 12 volts.
                              ic601 pin7 no VCC
                              CN4 PIN5 no VCC 12V
                              Power in pin2 is 3V mainboard is work.

                              Comment


                                #16
                                Re: philips 32pfl5507k/12

                                Originally posted by StromarMiki View Post
                                ic601 pin7 no VCC
                                CN4 PIN5 no VCC 12V
                                Power in pin2 is 3V mainboard is work.
                                Does ic601 pin 7 connect to J17 and then to J9?
                                How do you know the main board is working and sending the power ON signal?
                                Last edited by R_J; 01-25-2022, 10:57 AM.

                                Comment


                                  #17
                                  Re: philips 32pfl5507k/12

                                  Originally posted by R_J View Post
                                  Does ic601 pin 7 connect to J17 and then to J9?
                                  How do you know the main board is working and sending the power ON signal?
                                  when connect CN4 on main board in pin 2 have 3v vcc.
                                  and dont have 12v. I thinks is problem in power board.

                                  Comment


                                    #18
                                    Re: philips 32pfl5507k/12

                                    Originally posted by StromarMiki View Post
                                    when connect CN4 on main board in pin 2 have 3v vcc.
                                    and dont have 12v. I thinks is problem in power board.
                                    Does the voltage on pin2 change when you press the power button?
                                    CN4 pin 1 is the standby 3.3 volts that supplies the main board, CN4 pin 2 turns the power supply on and off.
                                    Last edited by R_J; 01-25-2022, 01:07 PM.

                                    Comment


                                      #19
                                      Re: philips 32pfl5507k/12

                                      Originally posted by R_J View Post
                                      Does the voltage on pin2 change when you press the power button?
                                      CN4 pin 1 is the standby 3.3 volts that supplies the main board, CN4 pin 2 turns the power supply on and off.
                                      When I connect the power cable to 220v only red led blinking.
                                      The main board works but reports an error.
                                      4s pause and 3 fast flashing led blinking. I can't find this error.
                                      Voltage failure is possible.

                                      Comment


                                        #20
                                        Re: philips 32pfl5507k/12

                                        Originally posted by StromarMiki View Post
                                        When I connect the power cable to 220v only red led blinking.
                                        The main board works but reports an error.
                                        4s pause and 3 fast flashing led blinking. I can't find this error.
                                        Voltage failure is possible.
                                        Here it is listed under layer 1
                                        Attached Files

                                        Comment

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