Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

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  • kodiac
    Senior Member
    • Jul 2010
    • 116
    • Canada
    #21
    Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

    Bottom PWR Board IC's

    U801 - EM8671A / QE10004
    Q900 - BA0N10 / EFF2537
    Q840 - B09P03 / CFG0133
    U901 - QZ9904GN / CD7J0Y.3G
    U601 - M102/315H
    Q551 - 1AMVV
    U803 - D102 216C
    Q904 - 1AM
    Attached Files

      Comment

      • kodiac
        Senior Member
        • Jul 2010
        • 116
        • Canada
        #22
        Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

        Thank You

          Comment

          • kodiac
            Senior Member
            • Jul 2010
            • 116
            • Canada
            #23
            Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

            I don't see R815

            But R13 seems to be open
            R13 goes to U801 pin 5 - looks like 360

              Comment

              • R_J
                Badcaps Legend
                • Jun 2012
                • 9535
                • Canada
                #24
                Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

                I ment R812, It is between the fets source and ground
                If the number on R813 is 360, it should read 36Ω. If it is open U801 will be shot.
                Also check R821, in some cases it can go open if R812 opens
                Here is the pdf of U801
                Attached Files
                Last edited by R_J; 09-10-2018, 07:33 PM.

                  Comment

                  • kodiac
                    Senior Member
                    • Jul 2010
                    • 116
                    • Canada
                    #25
                    Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

                    Thats R813.

                      Comment

                      • kodiac
                        Senior Member
                        • Jul 2010
                        • 116
                        • Canada
                        #26
                        Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

                        OK thanks.
                        I will check this out tomorrow.

                          Comment

                          • kodiac
                            Senior Member
                            • Jul 2010
                            • 116
                            • Canada
                            #27
                            Re: Replacing Power Mosfet in Toshiba 32L1300UC LCD TV power supply?

                            U801 - EM8671A
                            - Pin 6 ( Vcc ) is shorted to GND / Pin 4 in circuit

                            R813 - 360 ( 36 ) is open, connects to U801 pin 5

                            R821 - 201 ( 200 ) measures .820 Mohm, connects to U801 pin 3


                            I am not to familar with the U801 circuits.
                            Are there strict component tolerances for this circuit?

                            Can the R813 = 360 be replaced with a 470 or a 330 ?
                            Can the R821 = 201 be replaced with a 221 or a 271 ?

                            I have to find some replacement components, now.


                            I appreciate your help.
                            Thank You

                              Comment

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