Announcement

Collapse
No announcement yet.

Tv Smarttech 43 smd components broken identification

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #21
    Originally posted by Diah View Post
    this has nothings to do with T-CON.. T-con had its own Fuse... the problem still at MB... DC to DC of 12 VCC not only one Mosfet SI3407-TP. the other one too... its like PNP / NPN circuit
    Hi if you talk about those around here i already test it there are good . Thanks

    Comment


      #22
      Originally posted by labello View Post

      Hi if you talk about those around here i already test it there are good . Thanks
      Yes, what are you listening to, without the T-CON connected, the mosfet also heats up and burns out?, look for a problem on the T-CON, what could be shorting it out.

      Comment


        #23
        Originally posted by lotas View Post

        Yes, what are you listening to, without the T-CON connected, the mosfet also heats up and burns out?, look for a problem on the T-CON, what could be shorting it out.
        Hi i just finished to look at t-con board it seems that most capacitor are shorted. I put one leg on the ground and meter gives me sound on bot side.. Maybe is better to find another one ..

        Comment


          #24
          Originally posted by labello View Post

          Hi i just finished to look at t-con board it seems that most capacitor are shorted. I put one leg on the ground and meter gives me sound on bot side.. Maybe is better to find another one ..

          Which ones are these?
          Attached Files

          Comment


            #25
            for which reason the T-CON had one Fuse for 12VCC ,, are this Fuse dummy !!!. if you are talking on short you have on T-CON... use 2 batteries 1.5V so u have 3 V will low current and fed the Fuse with + and the - to t-CON chassis let see if this 3V will die ..

            Comment


              #26
              Originally posted by Diah View Post
              for which reason the T-CON had one Fuse for 12VCC ,, are this Fuse dummy !!!. if you are talking on short you have on T-CON... use 2 batteries 1.5V so u have 3 V will low current and fed the Fuse with + and the - to t-CON chassis let see if this 3V will die ..
              Hi do you mean right here injection 3v right here, and measured on the t-con 3v test point ? Thanks

              Comment


                #27
                Do you have a laboratory power supply?

                Comment


                  #28
                  Originally posted by labello View Post

                  Hi do you mean right here injection 3v right here, and measured on the t-con 3v test point ? Thanks
                  yes you have point on this rail u can use it. and see the F on both side if there 3V

                  about laboratory power supply, can be used after the 3V test ok... then you can increase

                  Comment


                    #29
                    Originally posted by lotas View Post
                    Do you have a laboratory power supply?
                    Yes i have this one maximum 30v

                    Comment


                      #30
                      Originally posted by Diah View Post

                      yes you have point on this rail u can use it. and see the F on both side if there 3V

                      about laboratory power supply, can be used after the 3V test ok... then you can increase
                      Ok so for start 3v and with amp? I have thermal camera also, to see if any component getting hot(it could be a short right)
                      Last edited by labello; 02-16-2025, 01:22 PM.

                      Comment


                        #31

                        Apply 8 - 10 volts to these points and increasing the amperes, see what starts to heat up...
                        Attached Files

                        Comment


                          #32
                          Originally posted by lotas View Post
                          Apply 8 - 10 volts to these points and increasing the amperes, see what starts to heat up...
                          Hi I'm already doing what you say , first when I plugged in the camble, it going a little spark then the power supply going on protection (suppose short) then it seems that chip and a diode . Thank you

                          Comment


                            #33
                            Guys I replace the new t-con and notting happened, no image only led on. So I'm guessing those components are similar or not? Thanks a lot

                            Comment


                              #34
                              Doesn't matter guys. I will buy another main board and solve this night mare. Thanks for your time

                              Comment

                              Working...
                              X