Viewsonic VX2235WM........ 10 Seconds to black

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  • Robert Ashton
    Member
    • May 2014
    • 34
    • USA

    #1

    Viewsonic VX2235WM........ 10 Seconds to black

    Hi everyone, new member here

    Before I start I just want to say I have learned so many things just hunting around this forum Thank You.

    OK,

    I have a Viewsonic VX2235WM that I bought new at costco about four years ago.

    It has the DAC-19M009 "Inverter Board" or power board..... I don't know actually what to call it.

    It had the typical 2 seconds to black that everyone talks about.

    So, I cracked her open and found the same thing I read all over net......

    BADCAPS!.... All CapXcon or Crapcon as you guys like to say. LOL


    So I ordered a kit..... from Canada? lol,

    Anyway, it showed up last friday Rubycon, Nichicon and Sanyo caps

    I replaced all the caps and put it back together, hooked it up to one of my machines...... and Bingo!

    It fired up just like new, for about ten seconds

    Then it went night night...........

    I scoured the net trying to figure out what was wrong, I honestly think after looking all over this forum the problem has to be the "Inverter IC Chips"... I have a crappy sears analog meter but I used it to check the Ohms that a member named Bill told someone else to check.


    That made me think they were bad, but I can't find any new ones.....

    One is P605 BZ6G1T, the other is P605 BZ6031


    I'm sorta new to this "Electronic Wrenching" forgive me if I sound stupid,



    R. Ashton
    Attached Files
    Last edited by Robert Ashton; 06-03-2014, 05:02 AM.
  • bammbammfran
    Badcaps Veteran
    • Apr 2014
    • 476
    • USA

    #2
    Re: Viewsonic VX2235WM........ 10 Seconds to black

    You should have changed the small green cap that is near the largest cap while you were at it.
    Try changing your 4 bulb plugs configuration so that the two bottom bulbs are on the two bottom plugs of the power supply and 2 tops to 2 tops.
    If still blacking out, check the voltage on F200 fuse while it is powered on and receiving a signal. (you can use the largest heatsink that is right next to the fuse as a ground source)

    Comment

    • Rtech
      Badcaps Legend
      • Jul 2010
      • 1095

      #3
      Re: Viewsonic VX2235WM........ 10 Seconds to black

      AOP605 is the correct Part code, usually available on Ebay if necessary.A standard fault on these Boards

      Comment

      • Robert Ashton
        Member
        • May 2014
        • 34
        • USA

        #4
        Re: Viewsonic VX2235WM........ 10 Seconds to black

        Thank you my friend,

        I did find the AOP605 chips but didn't want to buy them because the numbers didn't match.......

        I will order them and hopefully this monitor will be back in action


        Oh, and Bammbamm,

        I appreciate your reply, thanks for the help but I checked all that and it's all good.

        I think Rtech is right, those AOP605's cooked off when my caps blew?


        All I know is that I had to walk away because I was pulling my hair out and almost grabbed my 870 and shot the damn thing..........

        LOL.....

        Thank You my friends

        Comment

        • bammbammfran
          Badcaps Veteran
          • Apr 2014
          • 476
          • USA

          #5
          Re: Viewsonic VX2235WM........ 10 Seconds to black

          Might be right but my gut says ccfl bulbs since it worked for 10 seconds unless it wouldn't light back up after it blanked out

          Comment

          • Robert Ashton
            Member
            • May 2014
            • 34
            • USA

            #6
            Re: Viewsonic VX2235WM........ 10 Seconds to black

            Sorry not to get back to you guys,

            I have been busy and put that monitor on the back burner until yesterday.


            bammbammfran:

            I don't think the ccfl bulbs are bad, after I replaced the caps with the kit it would light up bright and run for ten seconds before it went dark...... I could turn it off and on again over and over and it would light up like brand new for ten seconds.

            But what do I know, maybe you're right

            I did check all the wires and connections I could see to the cclf's and nothing looked burnt, cracked as far as I could tell.

            I did take your advice when I ordered the two AOP605's last night and ordered a new start cap...

            Only I had to order ten of them! LOL Ten Rubycon 50v 22uf 105c when I needed one

            Oh well, I bought everything from the same vendor with free shipping for $ 9.38.....

            Guess I have to find a few more monitors that need that cap

            Parts should be here on wednesday, I'll report back with the results.......


            R. Ashton

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Viewsonic VX2235WM........ 10 Seconds to black

              So you took the LCD panel apart to inspect the wires and the lamps?
              Do you have test lamps?

              https://www.badcaps.net/forum/showth...er+testing+cfl
              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

              • Robert Ashton
                Member
                • May 2014
                • 34
                • USA

                #8
                Re: Viewsonic VX2235WM........ 10 Seconds to black

                Originally posted by budm
                So you took the LCD panel apart to inspect the wires and the lamps?
                Do you have test lamps?

                https://www.badcaps.net/forum/showth...er+testing+cfl
                No, I didn't take it apart.....

                I just inspected all the wires and connections I could see.

                I don't want to come across as some smart ass, I read all the threads I could find with the DAC-19M009 and checked everything I could find with all the problems everyone had,


                I have no test lamps, but I did switch the lamps around and there was no difference at all.

                Comment

                • Robert Ashton
                  Member
                  • May 2014
                  • 34
                  • USA

                  #9
                  Re: Viewsonic VX2235WM........ 10 Seconds to black

                  Thanks for your help budm...

                  I still hope and think those AOP605's and that start cap are the the problem.

                  Comment

                  • bammbammfran
                    Badcaps Veteran
                    • Apr 2014
                    • 476
                    • USA

                    #10
                    Re: Viewsonic VX2235WM........ 10 Seconds to black

                    you can try to plug in one bulb at a time and see how long each one stays lit and see if they all look about the same brightness
                    If the wires are long enough, try each one in the same plug
                    This test usually will only point out one that is really bad

                    the reason I feel it might be bulbs, is number one , because it is a 22"
                    and usually when transistors fail, they won't usually last for 10 seconds
                    FYI: bulb wire issues usually are on the opposite end of where the wires enter the screen, so you can not see them easily

                    Comment

                    • budm
                      Badcaps Legend
                      • Feb 2010
                      • 40746
                      • USA

                      #11
                      Re: Viewsonic VX2235WM........ 10 Seconds to black

                      Example of bad lamps and bad lamp wiring:
                      http://s807.photobucket.com/user/bud...?sort=3&page=1
                      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

                      • Robert Ashton
                        Member
                        • May 2014
                        • 34
                        • USA

                        #12
                        Re: Viewsonic VX2235WM........ 10 Seconds to black

                        You are both right,

                        The parts came today and I replaced the two transistors and the starter cap....... no change

                        I took the plunge and opened up the display, it was surprisingly easy as long as you are patient and gentle.

                        One of the blubs out of four is burnt....... the wires are fine but one is dead, guess I'll order two new ccfl's.

                        I'm going to make a test light out of a 13 watt sylvania to make sure everything else is ok.


                        Thanks guys

                        Comment

                        • Agent24
                          I see dead caps
                          • Oct 2007
                          • 4913
                          • New Zealand

                          #13
                          Re: Viewsonic VX2235WM........ 10 Seconds to black

                          Biggest problem is dust, everything else is fairly easy though when you're careful with it.

                          The CCFLs are easy to snap. I broke one when replacing some the first time. Take good care with what you're doing there too. I was too busy concentrating on soldering the wires correctly!
                          "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                          -David VanHorn

                          Comment

                          • Robert Ashton
                            Member
                            • May 2014
                            • 34
                            • USA

                            #14
                            Re: Viewsonic VX2235WM........ 10 Seconds to black

                            Well, what do you know......

                            Just made a test light, hooked it up and it has been running bright without a flicker for half an hour

                            Sweet!

                            Now I have to find some ccfl's
                            Attached Files

                            Comment

                            • bammbammfran
                              Badcaps Veteran
                              • Apr 2014
                              • 476
                              • USA

                              #15
                              Re: Viewsonic VX2235WM........ 10 Seconds to black

                              good to hear

                              Comment

                              • budm
                                Badcaps Legend
                                • Feb 2010
                                • 40746
                                • USA

                                #16
                                Re: Viewsonic VX2235WM........ 10 Seconds to black

                                Nice, having test lamps help saving time narrowing down the problem.
                                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

                                • Robert Ashton
                                  Member
                                  • May 2014
                                  • 34
                                  • USA

                                  #17
                                  Re: Viewsonic VX2235WM........ 10 Seconds to black

                                  Thanks everyone

                                  Anyone have any advice on where to buy ccfl's ?

                                  I guess I need at least one set with the wires and plugs because I cut the wires short to make my test light

                                  Comment

                                  • Agent24
                                    I see dead caps
                                    • Oct 2007
                                    • 4913
                                    • New Zealand

                                    #18
                                    Re: Viewsonic VX2235WM........ 10 Seconds to black

                                    You can find a lot on eBay. I bought from ccflwarehouse.com before, but some here say they are a ripoff.
                                    But IIRC I bought through their eBay store which was cheaper.
                                    Last edited by Agent24; 06-11-2014, 09:22 PM.
                                    "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                                    -David VanHorn

                                    Comment

                                    • c_hegge
                                      Badcaps Legend
                                      • Sep 2009
                                      • 5219
                                      • Australia

                                      #19
                                      Re: Viewsonic VX2235WM........ 10 Seconds to black

                                      Just so you know, those capacitors are fakes. They will probably be no higher quality than the original CapXons.
                                      I love putting bad caps and flat batteries in fire and watching them explode!!

                                      No wonder it doesn't work! You installed the jumper wires backwards

                                      Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                                      Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                                      Comment

                                      • Robert Ashton
                                        Member
                                        • May 2014
                                        • 34
                                        • USA

                                        #20
                                        Re: Viewsonic VX2235WM........ 10 Seconds to black

                                        Fakes? How can you tell?

                                        The vendor I bought them from has a 99% approval rating.......

                                        Well, that sucks

                                        Should I replace them, or just deal with it?

                                        Comment

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