WestingHouse 19" 19w4 LCD monitor- DAC-12M030

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  • Soisauss
    Member
    • Jun 2013
    • 33
    • United States

    #41
    Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

    Originally posted by budm
    OK, that means the problem is in the inverter circuit that we isolate by lifitng the fuse. More likely to have the shorted out MOSFET which is very common problem as the other had suggested.
    So you need to take good resistance reading again using the pin out of the MOSFET spec and my drawing as the guide.
    Okay, what setting should I be using on my multimeter then? Should I continue to use the X1k Ohms setting?

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #42
      Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

      Here are the resistance test points
      Meter probe on 1 (color does not matter), then check the reading between
      1 and 2 = ???
      1 and 3 =???
      1 and 4 = ???
      1 and 5 = ???

      Meter probe on 6 (color does not matter), then check the reading between
      6 and 2 = ???
      6 and 3 = ???
      6 and 4 = ???
      6 and 5 = ???
      Make sure to tell us if it shows as Ohm, K Ohm, M Ohm.
      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

      • Soisauss
        Member
        • Jun 2013
        • 33
        • United States

        #43
        Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

        Originally posted by budm
        Here are the resistance test points
        Meter probe on 1 (color does not matter), then check the reading between
        1 and 2 = ???
        1 and 3 =???
        1 and 4 = ???
        1 and 5 = ???

        Meter probe on 6 (color does not matter), then check the reading between
        6 and 2 = ???
        6 and 3 = ???
        6 and 4 = ???
        6 and 5 = ???
        Make sure to tell us if it shows as Ohm, K Ohm, M Ohm.
        Okay, so the number 2-5, you want me to test each pin on said numbers right? For example, 1 and 2, Black will be on 1 and then I'll test each pin on 2 (which is 4) with red, correct?

        ^ That above is assuming you want me to follow the picture you've attached.

        Also, my meter only reads in OHM... :/
        Last edited by Soisauss; 06-26-2013, 10:08 PM.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #44
          Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

          Black probe on 1 and red probe on for example the one I mark as #2 will be any one of those 4 pins since all those 4 pins in the circle are connected together. As you can see, the 4 pins on the right side of the MOSFETs are tied together.
          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

          • Soisauss
            Member
            • Jun 2013
            • 33
            • United States

            #45
            Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

            Originally posted by budm
            Black probe on 1 and red probe on for example the one I mark as #2 will be any one of those 4 pins since all those 4 pins in the circle are connected together. As you can see, the 4 pins on the right side of the MOSFETs are tied together.
            Okay, cool beans. I'll report back with the readings!

            Comment

            • Soisauss
              Member
              • Jun 2013
              • 33
              • United States

              #46
              Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

              Okay, here are my readings. Using the same meter I've posted and using the green numbers on the meter.
              The setting were set to x1K ohms

              Meter probe on 1 (color does not matter), then check the reading between
              1 and 2 = 15
              1 and 3 =15
              1 and 4 = 6
              1 and 5 = 6

              Meter probe on 6 (color does not matter), then check the reading between
              6 and 2 = 2.5
              6 and 3 = 2.5
              6 and 4 = .6
              6 and 5 = .6

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #47
                Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                They do look bad, but I forget to tell you to use x100 Ohms scale for checking, sorry about that. Can you test it again? Also try reversing the leads of the meter so you will report 4 set of readings.
                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

                • Soisauss
                  Member
                  • Jun 2013
                  • 33
                  • United States

                  #48
                  Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                  Originally posted by budm
                  They do look bad, but I forget to tell you to use x100 Ohms scale for checking, sorry about that. Can you test it again? Also try reversing the leads of the meter so you will report 4 set of readings.
                  Okay, the setting is set to x100 Ohms.

                  Meter probe on 1 (Black), then check the reading between
                  1 and 2 = 45
                  1 and 3 =48
                  1 and 4 = 26
                  1 and 5 = 26

                  Meter probe on 6 (Black), then check the reading between
                  6 and 2 = 2.8
                  6 and 3 = 2.8
                  6 and 4 = .6 *No Change
                  6 and 5 = .6 *No Change
                  ----------------------------------------------------
                  Meter probe on 1 (Red), then check the reading between
                  1 and 2 = 2.9
                  1 and 3 =2.9
                  1 and 4 = 2.79
                  1 and 5 = 2.79

                  Meter probe on 6 (Red), then check the reading between
                  6 and 2 = 45
                  6 and 3 = 45
                  6 and 4 = .6 *No Change
                  6 and 5 = .6 *No Change
                  Last edited by Soisauss; 06-27-2013, 03:22 PM.

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #49
                    Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                    Not sure how you read the scale to be the same as 1K range to get 0.6 on x100 scale, the 0.6 = 60 Ohms, 2.8 = 28 Ohms.
                    At this points I would suggest to replace ALL 4 MOSFETs.
                    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

                    • Soisauss
                      Member
                      • Jun 2013
                      • 33
                      • United States

                      #50
                      Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                      Originally posted by budm
                      Not sure how you read the scale to be the same as 1K range to get 0.6 on x100 scale, the 0.6 = 60 Ohms, 2.8 = 28 Ohms.
                      At this points I would suggest to replace ALL 4 MOSFETs.
                      Good question....

                      Now the question is where can I get these mosfets without ordering from overseas in China (been reading some ebay reviews....and the result has my head scratching).

                      Comment

                      • jetadm123
                        Badcaps Legend
                        • Feb 2010
                        • 2169

                        #51
                        Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                        There are several American sellers on eBay selling the AOP605.

                        Comment

                        • Soisauss
                          Member
                          • Jun 2013
                          • 33
                          • United States

                          #52
                          Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                          Originally posted by jetadm123
                          There are several American sellers on eBay selling the AOP605.
                          If you can link it, that's be awesome!


                          Btw, thanks a ton for your help and patient Budm!! You are a trooper!!!

                          Comment

                          • budm
                            Badcaps Legend
                            • Feb 2010
                            • 40746
                            • USA

                            #53
                            Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                            Just type in AO605 in EBAY search and select US only on the left pane. I.E.
                            http://www.ebay.com/itm/5X-AOP605-P6...item2a15bf0e14
                            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

                            • jetadm123
                              Badcaps Legend
                              • Feb 2010
                              • 2169

                              #54
                              Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                              http://www.ebay.com/itm/LOT-OF-2-AOP...item4ac5f61c37

                              Comment

                              • Soisauss
                                Member
                                • Jun 2013
                                • 33
                                • United States

                                #55
                                Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                                Originally posted by budm
                                Just type in AO605 in EBAY search and select US only on the left pane. I.E.
                                http://www.ebay.com/itm/5X-AOP605-P6...item2a15bf0e14
                                Gotcha!! Thanks again!! Just ordered 4 and shall be here next week hopefully. Will report back.

                                Thanks a bunch!

                                Comment

                                • Soisauss
                                  Member
                                  • Jun 2013
                                  • 33
                                  • United States

                                  #56
                                  Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                                  And....IT LIVES!!!!!!!!!!!! To serve again!

                                  Thank you all for your help and to budm for guiding me step-by-step!

                                  This forum is worthy of its recognition!
                                  Attached Files

                                  Comment

                                  • budm
                                    Badcaps Legend
                                    • Feb 2010
                                    • 40746
                                    • USA

                                    #57
                                    Re: WestingHouse 19" 19w4 LCD monitor- DAC-12M030

                                    Great, and thanks for the feedback.
                                    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

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