Announcement

Collapse
No announcement yet.

Dell E2310Hc LED Conversion Project

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Dell E2310Hc LED Conversion Project

    Hello All,

    I'm in the process of converting some Dell E2310Hc monitors to LED back-light.
    I've converted some LCD screens to the LED replacements already. I'm not 100% sure on just how to wire this all up correctly. I bought some mini step up boards to change the +5vdc output to +12vdc. I want to turn off or not use the on board inverter presently used on these inverter boards. I've watched some YouTube videos on how to do this but they weren't about this particular monitor. The symbols or pinouts are a little confusing to me? I've included the two boards in question. I left out the step up board because I know about Vcc and ground already. Could someone tie the pinouts together for me to clear this issue up for me?

    Thanks In Advance,
    Lcdman
    Attached Files
    Last edited by lcdman; 09-23-2018, 02:07 PM.

    #2
    Re: Dell E2310Hc LED Conversion Project

    It's fairly simple. Pin "O/F" on the power/logic board is the backlight On/Off signal for the original inverter. You can connect this signal to pin "ENA" on your new inverter board ("ENA" stands for _enabled_ - i.e. turning your new LED inverter driver board On or Off).

    Likewise, pin "DIM" on the power/logic board is typically an analog voltage between 0 and 3.3V that controls how bright the backlights of the monitor should be. Connect this pin to the "DIM" pin on your new LED inverter driver board.

    "VIN" on the LED driver board is your monitor's VCC rail that powered the original CCFL inverter.

    And "GND" is obviously ground on both.

    Last but not least, I'm not sure why you bought mini step-up board to chance 5V to 12V. Your monitor's power supply should have a 12-15V rail already going to the original CCFL inverter. Just remove the jumpers that go to the CCFL inverter and wire the output of that voltage rail to the "VIN" of the LED driver board.

    If still in doubt about what I said, please post top and bottom view pictures of your power board, as well as the other boards you have so that we can give you more precise instructions.

    Comment


      #3
      Re: Dell E2310Hc LED Conversion Project

      +1, beside, the existing 5V power supply probably will not have enough power to run the logic board and the LED driver circuit.
      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


        #4
        Re: Dell E2310Hc LED Conversion Project

        Hello Again,

        First off thanks to momaka and budm for the replies. I wasn't aware that the power supply had a 12vdc rail? I was going by the legend at the pin-out from pwr sply board to the logic board. That where the step up board idea came from. That and one of the YouTube videos that I watched on a LED conversion. Plus I was thinking 12vdc would give more light from the LED strip versus 5vdc. I've included top and bottom view of all the boards including the step up board. Perhaps drawing or noting the connections would be great as well.

        Thanks Again,
        Lcdman
        Attached Files
        Last edited by lcdman; 09-24-2018, 06:23 PM. Reason: Wanted To Add More Info.

        Comment


          #5
          Re: Dell E2310Hc LED Conversion Project

          What is the spec of that LED driver board?
          What is the maximum Input Voltage it can handle?
          It looks like it has the boost converter on it.
          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


            #6
            Re: Dell E2310Hc LED Conversion Project

            https://www.badcaps.net/forum/attach...8&d=1537834614
            D902 is the rectifier for power supply (12 ~ 18VDC range) to run the inverter circuit, you can take the Voltage on the output side of the SMD fuse F801 (black body with 'D' printed on top), you will need to disable the inverter circuit by cutting the trace after the + pad of the C802.
            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


              #7
              Re: Dell E2310Hc LED Conversion Project

              Originally posted by budm View Post
              https://www.badcaps.net/forum/attach...8&d=1537834614
              D902 is the rectifier for power supply (12 ~ 18VDC range) to run the inverter circuit, you can take the Voltage on the output side of the SMD fuse F801 (black body with 'D' printed on top), you will need to disable the inverter circuit by cutting the trace after the + pad of the C802.
              An alternative way would be to remove fuse F801 completely (to me, it looks more like a 0-Ohm resistor jumper rather than a fuse, so no issue in doing that), which would disable power going to the entire old inverter. Unfortunately, this will also disconnect electrolytic capacitor C802 from the circuit. But looking at the LED inverter/driver board, it appears to have a low-quality JWCO cap. So if you do remove F801, you can then remove C802 and use it to replace the JWCO cap on the LED driver board. That would be a simpler modification, IMO, as you won't have to cut board traces. Not that there is any issue with doing that.

              Originally posted by lcdman
              That and one of the YouTube videos that I watched on a LED conversion.
              YouTube is full of wrong and/or incomplete information. I'd say 90% of the technical videos are like that when it comes to repairs and modifications. Very few people actually know what they are doing, and even fewer explaining it properly. So take everything you see there with a bit of skepticism and expect to do more research yourself to see if what the video showed is correct or not.
              Last edited by momaka; 09-25-2018, 02:41 AM.

              Comment


                #8
                Re: Dell E2310Hc LED Conversion Project

                You would need to use both the LED Driver Bd and the Boost Converter Bd.
                First you would need to identify a good 12V source. This could be found as described by the suggestions made by previous Members. When you have this 12V you would connect the +12v to the Vin+ of MT3608 and GND to the Vin-. Turn on the display and adjust the MT3608 pot tiny screw until the output reads 24V. Turn off the display Remove the O/F and DIM wires from the connector and solder them on to the ENA and DIM wires of the LED Driver. Connect the Vout+ of the MT3608 to the Vin wire of the LED Driver. Connect the Vout- of the MT3608 to the GND wire of the LED Driver. Insulate these connections from the chassis as you don't want the GND connection on the LED Driver touching the chassis GND. Connect the LEDs to the OUTPUT connection of the LED Driver. Turn on the display and with a video input you will see picture.
                I have used these same MT3608 and LED Driver before in my conversions without fail.

                Comment


                  #9
                  Re: Dell E2310Hc LED Conversion Project

                  https://www.badcaps.net/forum/attach...2&d=1537834614
                  So based on the pictures, it can take 10 ~ 30V input so no need for using boost converter board.
                  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


                    #10
                    Re: Dell E2310Hc LED Conversion Project

                    "An alternative way would be to remove fuse F801 completely (to me, it looks more like a 0-Ohm resistor jumper rather than a fuse, so no issue in doing that), which would disable power going to the entire old inverter. Unfortunately, this will also disconnect electrolytic capacitor C802 from the circuit. But looking at the LED inverter/driver board, it appears to have a low-quality JWCO cap. So if you do remove F801, you can then remove C802 and use it to replace the JWCO cap on the LED driver board. That would be a simpler modification, IMO, as you won't have to cut board traces. Not that there is any issue with doing that."

                    I wasn't planning on leaving that crap cap (JWCO)on that driver board! That will be upgraded. My question is if the inverter is disabled how does the logic board function or is that an entirely different circuit? Can you explain (show/draw) where the fuse has been removed to place a tap for the LED driver board +VCC ?

                    Thanks To All,
                    Lcdman
                    Attached Files
                    Last edited by lcdman; 09-25-2018, 06:19 PM.

                    Comment


                      #11
                      Re: Dell E2310Hc LED Conversion Project

                      Hello To All,

                      I'd like to start putting some of these modded monitors together. Has anyone looked at my last post picture? I need somebody to please draw or show where to hook up the tap for the +Vcc for the LED driver board.

                      Take Care,
                      Lcdman
                      Attached Files

                      Comment


                        #12
                        Re: Dell E2310Hc LED Conversion Project

                        1) Lift either end of the JUMPER J810
                        2) Solder the +VCC wire to the positive leg of cap C918, the GND wire of the LED driver board to the negative leg of C918.
                        https://www.badcaps.net/forum/attach...8&d=1537834614
                        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


                          #13
                          Re: Dell E2310Hc LED Conversion Project

                          Hello Budm.

                          Thank you for your excellent directions and your time. Those connections will just power the leds but I won't be able dim or brighten them. Correct? Is there an easy remedy to make it do that as well?

                          Take Care,
                          Lcdman
                          Attached Files

                          Comment


                            #14
                            Re: Dell E2310Hc LED Conversion Project

                            Originally posted by lcdman View Post
                            Hello Budm.

                            Thank you for your excellent directions and your time. Those connections will just power the leds but I won't be able dim or brighten them. Correct? Is there an easy remedy to make it do that as well?

                            Take Care,
                            Lcdman
                            If you inspect your power supply board you will see the O/F pin which is for the Backlights on/off control pin, the you also have Dim for backlights dimming control but you never provide the spec of the LED driver board that I had asked for so I cannot tell if those two signals are compatible with your LED drive board or not, you can hook them up and find out.
                            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


                              #15
                              Re: Dell E2310Hc LED Conversion Project

                              Hello Again Budm,

                              I can't find any real specs on that LED driver board. I bought them on Ebay,
                              There is a 8pin ic on it that has the numbers DF6113 on it. I found a pdf online perhaps that will help? So otherwise try o/f and dim together that might work?

                              Take Care,
                              Lcdman

                              https://cdn.badcaps-static.com/pdfs/...0c5ce1ce7a.pdf

                              Not the same listing but exact driver board.

                              https://www.ebay.com/itm/540mm-LED-B...cAAOSwuHJbo6JR
                              Attached Files

                              Comment


                                #16
                                Re: Dell E2310Hc LED Conversion Project

                                Well, just hook them up then and find out and check the Voltages of those two control signals.
                                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


                                  #17
                                  Re: Dell E2310Hc LED Conversion Project

                                  Hello All,

                                  Well I got the one modded monitor going with the LED driver board hooked up. I used the the following connections between the Dell inverter board and the LED driver board/LED strips.

                                  C918 on the Dell inverter board are the taps for + & - on the LED driver pcb

                                  + to VIN on the LED driver pcb
                                  - to GND on the LED driver pcb
                                  o/f to ENA on the LED driver pcb
                                  dim to DIM on the LED driver pcb

                                  Now there might not be any other way to change this. But I can't increase or decrease the brightness of the monitor. Unless I hooked up something incorrectly which is possible. Please advise if anything isn't doesn't seen correct to any of you.

                                  Thanks As Always,
                                  Lcdman

                                  Comment


                                    #18
                                    Re: Dell E2310Hc LED Conversion Project

                                    If the LED's do come on but the Dim is not working then the DIM signal may not be DC control that the LED driver needs, it may be putting out PWM DIM signal instead, that is why I told you to check the Voltages of those two signals to see what you are getting. It is bad that the seller does not provide any info about the LED driver board control signals.
                                    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


                                      #19
                                      Re: Dell E2310Hc LED Conversion Project

                                      Disconnect the DIM on the LED Driver and see if the backlights remain ON. What voltage is the DIM control?

                                      Comment


                                        #20
                                        Re: Dell E2310Hc LED Conversion Project

                                        i never bother connecting the DIM line - you have very little chance of it working right - there are to many variations of signals used by different monitors.

                                        variable voltage (of varying levels and polarity), pwm (of varying rates and polarity)
                                        even i²c bus.

                                        Comment

                                        Working...
                                        X