LCD TV and Monitor basic troubleshooting guides

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

    LCD TV and Monitor basic troubleshooting guides

    I cannot find the original post so this is the new post that I will have it liked to my signature file. It will be good if it can be on the sticky.

    Notes: When make voltage measurement in the DEADLY Primary (HOT) side, the negative leg of the LARGE filter cap will be the ground ref.
    The chassis will be the ground ref for the Secondary (COLD) side.
    You should at least plug the unit you are working on into the GFCI outlet for safety.
    Attached Files
    Last edited by budm; 01-23-2013, 12:54 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
    • Stuck
    • Beowulf
      Senior Member
      • Dec 2012
      • 175
      • USA
      #2
      Re: LCD TV and Monitor basic troubleshooting guides

      Thanks Bud M.

      Have not seen it yet and I already like it.

        Comment

        • Steve.B
          Senior Member
          • Dec 2008
          • 83
          • UK
          #3
          Re: LCD TV and Monitor basic troubleshooting guides

          Great job Bud M. Very handy and informative guides. I am sure these will be of great use to a lot of people. Certainly agreed that these should be 'stickied'.

            Comment

            • Beowulf
              Senior Member
              • Dec 2012
              • 175
              • USA
              #4
              Re: LCD TV and Monitor basic troubleshooting guides

              Oops forgot to say I vote for this to be stickied.

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: LCD TV and Monitor basic troubleshooting guides

                  Excellent guides. Sticky please! Along with the factory reset guide of Randtek's that got buried.
                  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

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA
                      #6
                      Re: LCD TV and Monitor basic troubleshooting guides

                      Yes, the stickied for the factory reset too, that is really good one.
                      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

                        • retiredcaps
                          Badcaps Legend
                          • Apr 2010
                          • 9271
                          #7
                          Re: LCD TV and Monitor basic troubleshooting guides

                          I'll ask ratdude747 (moderator) to make this a sticky. He's a reasonable person to work with and quick to respond when he's not busy with school.

                          This will hopefully decrease the frequent questions and workload for everyone.
                          Last edited by retiredcaps; 01-23-2013, 07:02 PM.
                          --- begin sig file ---

                          If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

                          We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

                          Please do not post inline and offsite as they slow down the loading of pages.

                          --- end sig file ---

                            Comment

                            • ratdude747
                              Black Sheep
                              • Nov 2008
                              • 17136
                              • USA
                              #8
                              Re: LCD TV and Monitor basic troubleshooting guides

                              Originally posted by retiredcaps
                              I'll ask ratdude747 (moderator) to make this a sticky. He's a reasonable person to work with and quick to respond when he's not busy with school.

                              This will hopefully decrease the frequent questions and workload for everyone.
                              BAM!

                              Thread stuck.
                              sigpic

                              (Insert witty quote here)

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #9
                                  Re: LCD TV and Monitor basic troubleshooting guides

                                  Originally posted by ratdude747
                                  BAM!

                                  Thread stuck.
                                  Is it possible to sticky this one, too?
                                  https://www.badcaps.net/forum/showthread.php?t=24809
                                  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

                                    • tibimakai
                                      Badcaps Legend
                                      • Jan 2012
                                      • 3680
                                      • USA
                                      #10
                                      Re: LCD TV and Monitor basic troubleshooting guides

                                      Excellent work Bud!!
                                      May I ask you, if you could include in these documents, some pictures with the standby voltage area(or other important areas of the device), the most important ICs(and what they do), how do we know if the PS should have 166V or 450V.

                                        Comment

                                        • Foppel
                                          Senior Member
                                          • Jan 2013
                                          • 62
                                          • Germany
                                          #11
                                          Re: LCD TV and Monitor basic troubleshooting guides

                                          Hi Budm i like your cats Thanks for the Links. This page also helps me a lot: http://youclickspk.blogspot.de/p/tes...l#.UQF8yGf3G71

                                          cheers - Foppel

                                            Comment

                                            • budm
                                              Badcaps Legend
                                              • Feb 2010
                                              • 40746
                                              • USA
                                              #12
                                              Re: LCD TV and Monitor basic troubleshooting guides

                                              This is SONY training manual for the T-CON.
                                              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

                                                • ohmmy
                                                  Senior Member
                                                  • Jan 2013
                                                  • 182
                                                  • USA
                                                  #13
                                                  Re: LCD TV and Monitor basic troubleshooting guides

                                                  Wow great little tutorial budm. Explains things neatly and in correct sequence. Great guide!

                                                    Comment

                                                    • coxtel81
                                                      New Member
                                                      • Feb 2013
                                                      • 2
                                                      • ROMANIA
                                                      #14
                                                      Re: LCD TV and Monitor basic troubleshooting guides

                                                      Excellent work

                                                        Comment

                                                        • dejesus
                                                          Senior Member
                                                          • Jan 2013
                                                          • 108
                                                          • usa
                                                          #15
                                                          Re: LCD TV and Monitor basic troubleshooting guides

                                                          This inf. is great. A lot to learn in this side. hard to find inf. like this. Great!!!

                                                            Comment

                                                            • budm
                                                              Badcaps Legend
                                                              • Feb 2010
                                                              • 40746
                                                              • USA
                                                              #16
                                                              Re: LCD TV and Monitor basic troubleshooting guides

                                                              TFT voltages:
                                                              Sanyo LCD display training manual.
                                                              AS15G (EC5575) spec

                                                              Washed out picture:
                                                              https://www.badcaps.net/forum/showth...mma#post304275
                                                              Attached Files
                                                              Last edited by budm; 02-14-2013, 11:38 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

                                                                • rukmani
                                                                  New Member
                                                                  • Mar 2013
                                                                  • 2
                                                                  • india
                                                                  #17
                                                                  Re: LCD TV and Monitor basic troubleshooting guides

                                                                  thank sir good work...................

                                                                    Comment

                                                                    • Ahakim
                                                                      Member
                                                                      • Apr 2013
                                                                      • 64
                                                                      • USA
                                                                      #18
                                                                      Re: LCD TV and Monitor basic troubleshooting guides

                                                                      Need full Schematic of LG 32LD330 model. Who can help???...

                                                                        Comment

                                                                        • HerbTech1
                                                                          New Member
                                                                          • Apr 2013
                                                                          • 2
                                                                          • Canada
                                                                          #19
                                                                          Re: LCD TV and Monitor basic troubleshooting guides

                                                                          Thank you very much for this post. Lots of good reading ahead.

                                                                            Comment

                                                                            • sinaaa
                                                                              New Member
                                                                              • Apr 2013
                                                                              • 1
                                                                              • syria
                                                                              #20
                                                                              Re: LCD TV and Monitor basic troubleshooting guides

                                                                              Need full Schematic of samsung ln32c450e1d model. Who can help?

                                                                                Comment

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