Dell 3008wfp faulty power supply

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  • wobbin
    Member
    • Apr 2013
    • 18
    • United Kingdom

    #341
    Re: Dell 3008wfp faulty power supply

    Remind me not to buy yours then Fuus LOL :-)

    Comment

    • fuus
      Senior Member
      • Jun 2012
      • 123
      • England

      #342
      Re: Dell 3008wfp faulty power supply

      Haha, I do worry about what's wrong with mine...

      Comment

      • fuus
        Senior Member
        • Jun 2012
        • 123
        • England

        #343
        Re: Dell 3008wfp faulty power supply

        family friend fixed the whining, by bending the psu straight again. Replacement of that bent cap didn't stop it. When I get it back from him I'll try it in my monitor. Failing that, I think it's eBay time...

        Comment

        • fuus
          Senior Member
          • Jun 2012
          • 123
          • England

          #344
          Re: Dell 3008wfp faulty power supply

          Ok! Whine is gone! I put it back in the monitor
          plugged everything in
          Nothing. Not a blink. Ugh

          Comment

          • synatrol
            Member
            • Apr 2012
            • 13
            • Australia

            #345
            Re: Dell 3008wfp faulty power supply

            If you haven't done so already just double check that all the connectors are plugged in. I had to disassemble twice as I had forgotten to re-connect some connectors. There are quite a few to remember. I hope this is the case for your sake. It's been a marathon so we are all cheering you on to the finish line.

            Comment

            • fuus
              Senior Member
              • Jun 2012
              • 123
              • England

              #346
              Re: Dell 3008wfp faulty power supply

              Unfortunately not. I had a look on the PCB and it looks like my friend has replaced the wrong schtokky

              Comment

              • slabklab
                New Member
                • Apr 2013
                • 5
                • Australia

                #347
                Re: Dell 3008wfp faulty power supply

                G'day all,

                I have a 3007 which doesn't power up.

                Is there a thread for this model? I haven't been able to find one. There seems to be heaps of info on the 3008 but not much on the earlier model.

                I tested the 3 Schottkys I could find in-circuit and they seem to be OK.

                I'd be grateful for any assistance.

                Cheers

                Comment

                • Lumberjack777
                  Badcaps Veteran
                  • Dec 2010
                  • 464

                  #348
                  Re: Dell 3008wfp faulty power supply

                  Originally posted by slabklab
                  G'day all,

                  I have a 3007 which doesn't power up.

                  Is there a thread for this model? I haven't been able to find one. There seems to be heaps of info on the 3008 but not much on the earlier model.

                  I tested the 3 Schottkys I could find in-circuit and they seem to be OK.

                  I'd be grateful for any assistance.

                  Cheers
                  Hello, and welcome to badcaps.

                  It would definitely be better to start up a new thread on your monitor. That way anybody in the future could find your Dell 3007 in the search, and it would prevent confusion from anybody looking for Dell 3008 info in this thread.

                  It helps to be specific in the title. Example......

                  Dell 3007wfp - no power led - does not turn on

                  Basically....just give a nice short description including the exact model

                  Cheers

                  Comment

                  • slabklab
                    New Member
                    • Apr 2013
                    • 5
                    • Australia

                    #349
                    Re: Dell 3008wfp faulty power supply

                    Thanks for the advice,

                    I was a bit surprised that there was so much info on the 3008 and very little on the 3007.

                    Tried replacing a comparable Schottky on mine and blew the house earth leakage detector.

                    Sigh - think I'm going to need all the help I can get!

                    What's the electronics version of girding the loins? Grabbing a hold of your toroids maybe?

                    Cheers

                    Comment

                    • math
                      New Member
                      • Jun 2013
                      • 9
                      • australia

                      #350
                      Re: Dell 3008wfp faulty power supply

                      I just bought myself a 3008 for $75

                      It's in pristine condition except it won't turn on. As i suspect it has the same issue as half of the other people in here are getting... dead D22 Diode.

                      well... I shall be opening her up shortly to find out.

                      Comment

                      • Lumberjack777
                        Badcaps Veteran
                        • Dec 2010
                        • 464

                        #351
                        Re: Dell 3008wfp faulty power supply

                        Originally posted by math
                        I just bought myself a 3008 for $75

                        It's in pristine condition except it won't turn on. As i suspect it has the same issue as half of the other people in here are getting... dead D22 Diode.

                        well... I shall be opening her up shortly to find out.
                        Wow. Congrats! If it's just that diode, you got the deal of the century

                        I have repaired about 10 of these and I can tell you that most people have trouble seperating the front bezel from the back casing. Here's a nice tutorial on this repair. http://forums.overclockers.co.uk/sho...php?t=18460501

                        Though I wouldn't try to use a credit card like he did. They are just too flimsy for the job. Here's the way to properly disassemble....
                        Set it on it's back, screen side up. Now look for any tiny gap that you can find between the top bezel, and the casing. I usually found a mini-gap near the power button. You want to use 2 butter knives to seperate the bezel from the back. Try to push DOWN between the bezel and the back casing. You may need to pry back and forth with the 2 butter knives before you can finally get one to slide down inside. Now pry outward a little and stick the 2nd butter knife in. Slide along to the left with the knife, and reach down and grab the bezel and pull upward until it snaps apart. Do this all the way around.

                        I have seen a few guides where the person goes in and pries towards, and on, the lcd screen and tries to pry the bezel off on top of the lcd screen. That is a surefire way to crack the LCD

                        So you always want to be prying downward and outward and pulling up on the bezel. When you have the bezel seperated you can pop in some pieces of cardboard; turn it over and pull off the back plastic casing. Good luck mate!

                        Comment

                        • wobbin
                          Member
                          • Apr 2013
                          • 18
                          • United Kingdom

                          #352
                          Re: Dell 3008wfp faulty power supply

                          Look on Ebay for 'Spudgers' - people generally use these things for stripping down IPhones to swap the digitiser when it get broken.

                          Great for opening monitor cases. I have a couple of the stainless steel spatula shaped types.

                          Cheers
                          Robin

                          Comment

                          • math
                            New Member
                            • Jun 2013
                            • 9
                            • australia

                            #353
                            Re: Dell 3008wfp faulty power supply

                            Thank you for the advice lumberjack.

                            I've placed the screen in the closet out of sight as i wait patiently for a replacement diode to arrive in the mail. I believe if i only open it once to do the repair when i have the part here and ready to go there will be less chance of breaking it.

                            the part that i ordered as a replacement to the D22 diode is this
                            STPS30150CT
                            cost me $6 to get 2 of them with free shipping to my door. I should get them in 5 days.

                            datasheet here



                            not as high voltage as the 170v diode, but to get that one i would have to pay 4 times as much and have to wait as it's on back order

                            So i figured the original was 120v, a 150v one should suffice.

                            Comment

                            • math
                              New Member
                              • Jun 2013
                              • 9
                              • australia

                              #354
                              Re: Dell 3008wfp faulty power supply

                              IT WORKS

                              bloody awesome

                              too bad my laptop only has VGA and HDMI out ports... seems like i'm stuck @ 1920*1200 though

                              Comment

                              • Th3_uN1Qu3
                                Believe in
                                • Jul 2010
                                • 6031
                                • Romania

                                #355
                                Re: Dell 3008wfp faulty power supply

                                Uncheck "Hide modes that this monitor cannot display" and you should be able to get more.
                                Originally posted by PeteS in CA
                                Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                A working TV? How boring!

                                Comment

                                • math
                                  New Member
                                  • Jun 2013
                                  • 9
                                  • australia

                                  #356
                                  Re: Dell 3008wfp faulty power supply

                                  Originally posted by Th3_uN1Qu3
                                  Uncheck "Hide modes that this monitor cannot display" and you should be able to get more.
                                  i wish that was the case

                                  unlike winxp it won't give me any options to force a res.

                                  i'm using my laptop

                                  ati 6770m chip with output for VGA and HDMI

                                  wish it had dvi or display port

                                  Comment

                                  • Th3_uN1Qu3
                                    Believe in
                                    • Jul 2010
                                    • 6031
                                    • Romania

                                    #357
                                    Re: Dell 3008wfp faulty power supply

                                    There are HDMI -> DVI converters as far as i know.
                                    Originally posted by PeteS in CA
                                    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
                                    A working TV? How boring!

                                    Comment

                                    • math
                                      New Member
                                      • Jun 2013
                                      • 9
                                      • australia

                                      #358
                                      Re: Dell 3008wfp faulty power supply

                                      Originally posted by Th3_uN1Qu3
                                      There are HDMI -> DVI converters as far as i know.
                                      Yes, but they only convert passively " single link" DVI, even though they have dual link connections, the dual link is 'blank' and only single is passed through the cable.

                                      max res is 1920*1200....

                                      Need a new laptop :P

                                      Comment

                                      • math
                                        New Member
                                        • Jun 2013
                                        • 9
                                        • australia

                                        #359
                                        Re: Dell 3008wfp faulty power supply

                                        I got a new laptop.
                                        It has dual Link DVI output, comfortable running @ 2560*1600 now...

                                        thankyou all for your help

                                        Comment

                                        • S. Bouchard
                                          Member
                                          • Aug 2013
                                          • 28
                                          • United States

                                          #360
                                          Re: Dell 3008wfp faulty power supply

                                          Hi!

                                          I have a 3007WFP which does power up (blue led on) when no DVI is connected. Backlight does come on but the Self Test does not show up. If I press the power button, it does turn off. If I connect it to a PC (DVI), the power led turn amber.

                                          From time to time (when it was working), as it would wake up, I would experience a bunch of vertical lines which would be resolved by simply turning it off and back on.

                                          I have not opened up the monitor yet but from reading this thread, I suspect the D22 diode is fine since I am getting power. The controller board seems to be ok since the power button works, usb still works despite no video, it doesn't switch from blue power to amber when a dvi is connected... so could it be some bad capacitors which were starting to fail (vertical lines that I was getting from time to time) which have now failed?

                                          Obviously, I plan on opening the monitor but I am doing some recon first

                                          Thanks in advance for your help.

                                          Comment

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