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Samsung T220HD Recap

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    #21
    Re: Samsung T220HD Recap

    So please confirm that if you hookup a working computer to this monitor, do you see any picture for any time at all?
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      #22
      Re: Samsung T220HD Recap

      I will give it another shot.

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        #23
        Re: Samsung T220HD Recap

        I see a very dark shadow of my desktop. I can barely see it but I can make out what is trying to be displayed. It did not flash the correct view of the desktop at any time.

        UPDATE: I let the monitor remain plugged in for 10 minutes and then moved the mouse, the desktop flashed for a half second.

        UPDATE 2: Same thing after letting sit for another 10 minutes.
        Last edited by brillman; 09-25-2012, 02:09 PM.

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          #24
          Re: Samsung T220HD Recap

          Try the ccfl tests at section 5

          https://www.badcaps.net/forum/showpo...6&postcount=20
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            #25
            Re: Samsung T220HD Recap

            Originally posted by retiredcaps View Post
            Try the ccfl tests at section 5

            https://www.badcaps.net/forum/showpo...6&postcount=20
            Just so I have this right, when the procedure says this:

            Code:
            a) TURN POWER OFF and unplug the monitor and wait 1 minute
b) disconnect all CCFLs expect #1
c) plug in monitor and turn monitor on - note if "2 seconds to black" occurs
            The connections they are talking about are the pink and blue wires that plug in on the side under the metal shield?

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              #26
              Re: Samsung T220HD Recap

              Originally posted by brillman View Post
              The connections they are talking about are the pink and blue wires that plug in on the side under the metal shield?
              Yes. We are trying to see if any of the ccfls are completely broken. If yes, one of them will not light up.
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                #27
                Re: Samsung T220HD Recap

                Should I be able to see without disassembling any more than I have? I have done nothing with the panel assembly so far.

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                  #28
                  Re: Samsung T220HD Recap

                  Originally posted by brillman View Post
                  Should I be able to see without disassembling any more than I have? I have done nothing with the panel assembly so far.
                  If you do the test in a dark room, you should be able to see the ccfl lamp light or not. All you have to do is just unplug the connectors to the ccfl.
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                    #29
                    Re: Samsung T220HD Recap

                    Originally posted by retiredcaps View Post
                    If you do the test in a dark room, you should be able to see the ccfl lamp light or not. All you have to do is just unplug the connectors to the ccfl.
                    Been trying this a past few days and I can't get my monitor to stay on. Is there a trick to it?

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                      #30
                      Re: Samsung T220HD Recap

                      It is not meant to stay on, you are only looking to see if each ccfl lights up or not. Please re-read section 5 as I think you are not the idea of the tests.
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                        #31
                        Re: Samsung T220HD Recap

                        It's been a month, my apologies, considering the effort you've put in to help me. I am still hoping to resolve this. I will work on it tonight.

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                          #32
                          Re: Samsung T220HD Recap

                          Alright I finally was able to get some time to work on this. The monitor will only turn on if all 4 lamp wires are plugged in. Is this typical?

                          Comment

                            #33
                            Re: Samsung T220HD Recap

                            Well, no worries if we want to ditch this thread, but one final question if anyone cares to chime in... Is it even worth replacing the CCFLs on a LCD Monitor that might only be worth $100?

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                              #34
                              Re: Samsung T220HD Recap

                              Checked ebay for the price of a brand new panel, it is $100+, so I'm going to go for a $30 CCFL replacement. If that doesn't work, I'll scrap it.

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                                #35
                                Re: Samsung T220HD Recap

                                Originally posted by brillman View Post
                                Alright I finally was able to get some time to work on this. The monitor will only turn on if all 4 lamp wires are plugged in. Is this typical?
                                What do you mean -Test lamps? Yes you do have to have 4 connected
                                to do the test
                                Please upload pictures using attachment function when ask for help on the repair
                                http://www.badcaps.net/forum/showthread.php?t=39740

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                                  #36
                                  Re: Samsung T220HD Recap

                                  I was attempting to see if any one of the CCFLs were bad by plugging in one wire at a time and powering on the display as described in Section 5 of this URL:
                                  https://www.badcaps.net/forum/showpo...6&postcount=20

                                  The display would not power, unless all 4 lamp connectors were connected to the display.

                                  I do not have any test lamps at this time.

                                  Comment

                                    #37
                                    Re: Samsung T220HD Recap

                                    The test is only a flash test for each lamp

                                    If one of the CCFLs does not light up, it is likely physically damaged (cracked) or the wiring is completely broken to it. Take out that CCFL and inspect it. If all 4 CCFLs do show "2 seconds to black", one or more can still be bad. This test only discovers a completely dead CCFL or completely broken wiring.

                                    It will still go two secs to black but will reveal a completely dud bulb.

                                    Some members have been able to narrow it down using a "spare" bulb made from a ccfl.
                                    https://www.badcaps.net/forum/showthread.php?t=19987
                                    Please upload pictures using attachment function when ask for help on the repair
                                    http://www.badcaps.net/forum/showthread.php?t=39740

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                                      #38
                                      Re: Samsung T220HD Recap

                                      Got any energy saving bulbs that have died prematurely?
                                      https://www.badcaps.net/forum/showthread.php?t=19987

                                      I have a small collection, and the local discount shop sells a 7W CFL for 79p.
                                      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.

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                                        #39
                                        Re: Samsung T220HD Recap

                                        So, sounds like I should open it up regardless, inspect the bulbs. Resolder broken wire connections and replace broken bulbs.

                                        I haven't seen any good step by step instructions for my LCD panel, so I guess I will be winging it! It's a Chi Mei M220Z1-L03.

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                                          #40
                                          Re: Samsung T220HD Recap

                                          Opened it up and results are inconclusive at this point.

                                          Does the 2nd from the bottom look burnt out to you guys?
                                          Attached Files

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