Sharp LC-32D42U repair

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA
    #1

    Sharp LC-32D42U repair

    The power supply has no standby voltage due to bad snubber Zener diode (150V 5W) D7907 (1N5383) that shows 50 Ohms in both direction in the STBY SMPS, SMPS IC is TNY268 (https://cdn.badcaps-static.com/pdfs/...87623814b3.pdf).
    Attached Files
    Last edited by budm; 11-16-2013, 09:34 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
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Sharp LC-32D42U repair

      That looks like a Delta power supply board? What is the part # of it for future reference? DPS....
      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

        • Makiaveli
          Member
          • Nov 2013
          • 10
          • England
          #3
          Re: Sharp LC-32D42U repair

          hi

            Comment

            • Makiaveli
              Member
              • Nov 2013
              • 10
              • England
              #4
              Re: Sharp LC-32D42U repair

              Hi, i know this isnt to do with this thread an i apologise, im new here and just signed up. I wanted to post a new thread but for sum reason its not lettin me. i seem to be able to reply 2 a thread, does anyone know why this maybe?

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Sharp LC-32D42U repair

                  Originally posted by Makiaveli
                  Hi, i know this isnt to do with this thread an i apologise, im new here and just signed up. I wanted to post a new thread but for sum reason its not lettin me. i seem to be able to reply 2 a thread, does anyone know why this maybe?
                  You can make a thread after your first reply. Check your PM inbox.
                  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

                    • Makiaveli
                      Member
                      • Nov 2013
                      • 10
                      • England
                      #6
                      Re: Sharp LC-32D42U repair

                      ok i feel like a idiot, just read the forum rules. apologies for clogging up ur thread bud, typical school boy error!!

                        Comment

                        • budm
                          Badcaps Legend
                          • Feb 2010
                          • 40746
                          • USA
                          #7
                          Re: Sharp LC-32D42U repair

                          Yes, it is DELTA board.
                          Attached Files
                          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

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: Sharp LC-32D42U repair

                              DPS-178AP for any search engines .
                              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

                                • metropical
                                  Member
                                  • Jan 2017
                                  • 42
                                  • USA
                                  #9
                                  Re: Sharp LC-32D42U repair

                                  even though this is an old thread ..... perhaps.

                                  I've had a bum delta ps in another Sharp LC32D42U that we have. Swapped ps today and that is the issue.

                                  Last time it was the big zener D7908, but this time both D7908 and D7907 test (compare) bad. Last time I replaced the D7908 with a 10 wt instead of a 5wt, but I have misplaced notes on the 1N number and I don't know the 1N number of D7907 either.

                                  I'd like to find those numbers so I can buy and replace the parts.
                                  Anyone?

                                    Comment

                                    • PotShotScott
                                      Member
                                      • Feb 2007
                                      • 40
                                      #10
                                      Re: Sharp LC-32D42U repair

                                      Found this thread searching for my TV. Found 1n5383b on Bing/Google to be in the D7907 position. If anyone does respond to this thread where is D7908 on the Delta DPS-178AP A power supply board?

                                        Comment

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