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Help...can transistor NTE2653 replace with 2SA608N/2SC536N

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    Help...can transistor NTE2653 replace with 2SA608N/2SC536N

    Hello, to all, i want to ask somebody for help........can transistor NTE2653 replace with 2SA608N/2SC536N. For your information this part use for Toshiba lcd tv. Here i attach the datasheet

    http://www.nteinc.com/specs/2600to26...nte2652_53.pdf

    http://www.onsemi.com/pub_link/Collateral/EN6324-D.PDF

    Tq.

    #2
    Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

    No. The NTE2653 is a bigger part - its power dissipation 1W (Ic=3A) and the 2SA608 is a smaller 0.5W part (Ic=0.15A). It's okay to go bigger but not smaller with power transistors.

    Comment


      #3
      Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

      Wow a lot of confusing posts recently...
      Just wanted to make sure this is clear, the NTE2653 "matched pair" can replace the 2SA608N/2SC536N complementary pair because the NTE can handle more current - if the circuit that's using them was there to supply current to downstream devices. However the gain bandwidth product might not be high enough to completely replace the 2SA/2SC pair. Also the output of the NTE is more capacitive than the smaller, faster 2SA/2SC pair.

      The reason why I find it confusing is because NTE is a replacement not first source semiconductor provider. For mass produced hardware I find it very unlikely to have NTE devices in it. Yes, pulling out the NTE devices and soldering in new 2SA/2SC device pair likely will result in fried 2SA/2SC devices...
      Last edited by eccerr0r; 12-29-2013, 11:50 AM.

      Comment


        #4
        Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

        Yeah, the English is fragmented... that's most of the confusion...
        can transistor NTE2653 be replaced with 2SA608N/2SC536N
        can transistor NTE2653 replace the 2SA608N/2SC536N

        OP posted the same question to other forums
        those jumbo TO-92's are hard to sub.

        Comment


          #5
          Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

          I would like to know which section of the circuit these transistors are being used in. What is the model number of this Toshiba TV and what is the symptom?
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment


            #6
            Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

            Hello all, finally i replaced the transistor NTE2653 with 2SD1347, but the problem still cant solve,....Actually this part use in power supply section, and this lcd tv model is Toshiba 40av700e,......the problem is when I switch on the tv it will show display and sound for about 2-3 minutes and then blank without sound but stanby led still light. I testing psu board, their stanby 5v present but no voltage for 13v pin. Here's how i test this psu, disconnect this psu board from Tcon board, LVDS and backlight. this 2 pin(5v & 13v) output i load with 10w bulb each, then 5v pin connect using 10 kohm resistor to power_tv pin and switch on the power (240vac). Below is a picture of the psu and voltage that i've test.

            Sorry for my bad english,





            TQ.

            Comment


              #7
              Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

              Can we see good clear pictures of the the whole board, both sides?
              10K for forcing on pin is too high (@5v, the most you are going to get is 0.5mA), not enough to turn on the Opto or the transistor, try 1K.
              Last edited by budm; 01-21-2014, 07:35 PM.
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

              Comment


                #8
                Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                Hi budm here i attach a pictures for the psu board







                Comment


                  #9
                  Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                  So did you try using 1K resistor? That P CH MOSFET for the switched 13V output is not being turn on, the Gate voltage is still sitting at 15V, it should be closed to 2V to turn on that MOSFET.
                  Never stop learning
                  Basic LCD TV and Monitor troubleshooting guides.
                  http://www.badcaps.net/forum/showthr...956#post305956

                  Voltage Regulator (LDO) testing:
                  http://www.badcaps.net/forum/showthr...999#post300999

                  Inverter testing using old CFL:
                  http://www.badcaps.net/forum/showthr...er+testing+cfl

                  Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                  http://s807.photobucket.com/user/budm/library/

                  TV Factory reset codes listing:
                  http://www.badcaps.net/forum/showthread.php?t=24809

                  Comment


                    #10
                    Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                    Yes, i've try with 1k resistor, but no changes.

                    Comment


                      #11
                      Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                      It is normal if i get a reading like the pic above......

                      Comment


                        #12
                        Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                        The 0.7V looks like the Vbe voltage of the transistor.
                        BYW, the 2SC transistor that you replaced, was the old one bad? I cannot tell from the circuit as what that transistor is used for. Hard to trace out the connections.
                        Never stop learning
                        Basic LCD TV and Monitor troubleshooting guides.
                        http://www.badcaps.net/forum/showthr...956#post305956

                        Voltage Regulator (LDO) testing:
                        http://www.badcaps.net/forum/showthr...999#post300999

                        Inverter testing using old CFL:
                        http://www.badcaps.net/forum/showthr...er+testing+cfl

                        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                        http://s807.photobucket.com/user/budm/library/

                        TV Factory reset codes listing:
                        http://www.badcaps.net/forum/showthread.php?t=24809

                        Comment


                          #13
                          Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                          Are you sure this PSU is for Toshiba TV? It is made by Samsung.
                          Any BN44 number to search for schematics?
                          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


                            #14
                            Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                            Yes the old one transistor i I've replaced is problem, there's short circuit between all pin, multimeter reads zero ohm for all combinations test.

                            Yes tom66 this PSU make for Toshiba TV, it has no BN44 serial no, you can search using this no PSIV231i01T.

                            Comment


                              #15
                              Re: Help...can transistor NTE2653 replace with 2SA608N/2SC536N

                              Hai to all.. plz help me.. if u have toshiba 40av700e cfl inverter schematic diagram?

                              Comment

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