e701i-a3 no picture but backlights

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • freakaftr8
    Badcaps Legend
    • Oct 2012
    • 3743
    • USA

    #161
    Re: e701i-a3 no picture but backlights

    Remove the black side frame from that side of the panel there's like three or four screws in the front about three screws on the side that black frame should come off which is exposing the two driver boards on that side. You may have to remove more carefully peel away the black bezel to access these boards in access the black frame to pull it off. Once you get that off you got these two driver boards you have to carefully peel the board and the tabs off the screen completely remove them. Should provide a perfect picture after you're finished. I'm going to be posting a video on youtube of how to do this. I just perform this operation on another TV and recorded the whole thing I'm going to be posting a video on YouTube of how to do this. I just perform this operation on another TV in recorded the whole thing for anyone else in question on how to perform this task

    But for now rewind back to my first post on this topic and read from beginning to end you should get the general idea as I have provided pictures along the way also
    Did I leave the soldering iron on?

    Comment

    • Rstewart
      Member
      • Oct 2015
      • 15
      • United States of America

      #162
      Re: e701i-a3 no picture but backlights

      Im sorry i miss read your post. So just to be correct i'm going to completly remove that set of drivers from the panel and disguard them correct?

      Comment

      • Rstewart
        Member
        • Oct 2015
        • 15
        • United States of America

        #163
        Re: e701i-a3 no picture but backlights

        Okay I have got every thing out of the way and the brown tabs are not budging from the screen I'm scared I'm going to damage the panel?

        Comment

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK

          #164
          Re: e701i-a3 no picture but backlights

          I would first power the set up and make sure you know which tab you are removing.
          Then turn it off, and gently peel upwards. They are only glued on so only slight force is necessary.
          Do one at a time and test it each time. Bars should slowly come back.
          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

          • Rstewart
            Member
            • Oct 2015
            • 15
            • United States of America

            #165
            Re: e701i-a3 no picture but backlights

            Okay got them removed much better picture but still have some vertical lines? Maybe need to clean cables again?

            Comment

            • Rstewart
              Member
              • Oct 2015
              • 15
              • United States of America

              #166
              Re: e701i-a3 no picture but backlights

              Let's try this again
              Attached Files

              Comment

              • Rstewart
                Member
                • Oct 2015
                • 15
                • United States of America

                #167
                Re: e701i-a3 no picture but backlights

                Sorry I misunderstood I removed the whole side?

                Comment

                • freakaftr8
                  Badcaps Legend
                  • Oct 2012
                  • 3743
                  • USA

                  #168
                  Re: e701i-a3 no picture but backlights

                  Those vertical lines may be a bad connection on one of the white ribbon cables going from the T CON try to reseat them agai. Also you could try cleaning those cables with some rubbing alcohol on the connections and also try a little rubbing alcohol along where you removed the driver tabs from the side of the panel. Do not do this well its powered on and let everything dry really well before powering it back up.

                  Yes you removed the whole side correct? Both driver boards top and bottom? If so you did it correctly
                  Last edited by freakaftr8; 11-02-2015, 05:12 PM.
                  Did I leave the soldering iron on?

                  Comment

                  • budwich
                    Badcaps Legend
                    • Jul 2015
                    • 3097
                    • Canada

                    #169
                    Re: e701i-a3 no picture but backlights

                    Originally posted by Rstewart
                    Sorry I misunderstood I removed the whole side?
                    How many did you remove?

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK

                      #170
                      Re: e701i-a3 no picture but backlights

                      Vertical lines look like LVDS not seated correctly to me at least.
                      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

                      • freakaftr8
                        Badcaps Legend
                        • Oct 2012
                        • 3743
                        • USA

                        #171
                        Re: e701i-a3 no picture but backlights

                        Again this is what you should end up with.
                        Attached Files
                        Did I leave the soldering iron on?

                        Comment

                        • Rstewart
                          Member
                          • Oct 2015
                          • 15
                          • United States of America

                          #172
                          Re: e701i-a3 no picture but backlights

                          Thats exactly what I came up with I'm going to lay it back down and clean and reset the cables. Thanks.

                          Comment

                          • Rstewart
                            Member
                            • Oct 2015
                            • 15
                            • United States of America

                            #173
                            Re: e701i-a3 no picture but backlights

                            tom66 are you talking about the two white ribbons caming from the T-con?

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #174
                              Re: e701i-a3 no picture but backlights

                              Originally posted by Rstewart
                              tom66 are you talking about the two white ribbons caming from the T-con?
                              Ribbons coming from the MAIN board (with HDMI inputs etc on it) to the T-CON board.
                              Also reseat ribbons from T-CON to panel...

                              Don't touch the glued & bonded ribbons at the top of the LCD panel or the panel dies...Only touch the ones that go into the sockets, and can be removed...
                              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

                              • 12345lonestar
                                New Member
                                • Oct 2015
                                • 4
                                • USA

                                #175
                                Re: e701i-a3 no picture but backlights

                                I successfully fixed mine. Removed side tabs, and it works. BUT i did encounter a moment of sheer terror as I thought I removed the wrong side. So a heads up for anyone else.

                                At first I used a box cutter and just sliced the ribbon cables through the middle and removed the side driver boards. My video was still distorted and I had some horizontal lines. So i thought CRAP the other side is bad too. But then i removed the driver ribbons completely from the LCD pannel, and it was fixed, so make sure you completely remove the entire ribbon cable directly from the LCD edge, not just cut it, or like I did, dont remove it from just the driver board side.

                                Comment

                                • Rstewart
                                  Member
                                  • Oct 2015
                                  • 15
                                  • United States of America

                                  #176
                                  Re: e701i-a3 no picture but backlights

                                  Okay guys looks like I successfully fixed mine and as it stays powered up the lines are gradually going away. Anyway it's a lot better than no picture at all. I'm going to let it run for awhile before I put it back together. Thanks everybody I'm stoked!!!!

                                  Comment

                                  • freakaftr8
                                    Badcaps Legend
                                    • Oct 2012
                                    • 3743
                                    • USA

                                    #177
                                    Re: e701i-a3 no picture but backlights

                                    Awesome guys I'm glad these TVs have a second life.

                                    Lets see some pics. It looks like everybody's TV that has been saved looks great. Mine ever since I fixed it has a small black blob or I should say a darker area in the bottom center of the screen. It goes away with bright images but in dark images you can see it. I've seen this in some demo models in stores I think it's a different kind of failure of the panel I'm not sure
                                    Last edited by freakaftr8; 11-02-2015, 07:00 PM.
                                    Did I leave the soldering iron on?

                                    Comment

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK

                                      #178
                                      Re: e701i-a3 no picture but backlights

                                      Great to hear!

                                      @freak, I wouldn't be surprised if that is "mura" or uneven backlight films, it's pretty common with LCDs.
                                      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

                                      • freakaftr8
                                        Badcaps Legend
                                        • Oct 2012
                                        • 3743
                                        • USA

                                        #179
                                        Re: e701i-a3 no picture but backlights

                                        Yeah that's what I thought at first but it appears that it is definitely in the LCD panel cuz I can see some lines at the very bottom flickering along with the difference in brightness it does this all the way across the screen. I'm starting to think that maybe I miss cleaning the very bottom of the panel on the first driver. One of these days I'm probably going to pull it back apart and try cleaning and see if that fixes the problem
                                        Did I leave the soldering iron on?

                                        Comment

                                        • Rstewart
                                          Member
                                          • Oct 2015
                                          • 15
                                          • United States of America

                                          #180
                                          Re: e701i-a3 no picture but backlights

                                          Hello again guys (freakaftr8 and tom66) after getting frustrated last note I decided to leave the TV alone until today. I have great news! I removed the t-con board again and cleaned it good with alcohol, everywhere possible. I dried it good with a hair dryer and reinstalled it. Now the picture is perfect with no distorted view. I want to thank you guys again for your knowledge and your help.
                                          Attached Files

                                          Comment

                                          Related Topics

                                          Collapse

                                          • Tynan Dill
                                            Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
                                            by Tynan Dill
                                            I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

                                            Upon bringing it home and plugging it up, it showed a standby light.

                                            I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

                                            The screen seems to blackout and stay black, but with a flashlight I can see the display.

                                            With my Playstation 4 connected via HDMI, and running a game I can hear sound.

                                            Assuming...
                                            11-22-2024, 01:46 PM
                                          • m1ch43lzm
                                            HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
                                            by m1ch43lzm
                                            Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
                                            Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
                                            05-12-2025, 08:37 PM
                                          • howardc64
                                            A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
                                            by howardc64
                                            Problem

                                            This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
                                            08-04-2024, 10:36 PM
                                          • maxim2511
                                            LG 55EC930V OLED - swich on swich of no screen
                                            by maxim2511
                                            My Oled Tv is 55inch tv, 3 days ago I notice that middle of the screen is getting warmer and on picture I have ghosting, missing red color. Color red was still displaying, but it was not so strong as corners of the screen and watching some movies makes me angry.
                                            Then I get an idea to take it apart and clean boards from dust.
                                            In side of Tv was not so bad, I take compressed air in can, and gently blow up.

                                            Also I was thinking to styrofoam sponge to isolate power board from screen that the middle of the screen will not worm so much. Because Led on screen when gets higher...
                                            05-14-2021, 02:21 AM
                                          • Fly_Among_Stars
                                            VIZIO E70-E3 Half picture with half TCON
                                            by Fly_Among_Stars
                                            Hi,
                                            I have a VIZIO E70-E3.
                                            Symptoms: Black screen, no picture, but LED backlights are working.
                                            I probed the power board and voltages are as listed on the board.
                                            Main board appears fine, too.
                                            I believe the problem is either a bad T-CON board, or connection to LCD, or bad LCD.
                                            There are two separate ribbon cables feeding the LCD.
                                            If both are connected, the screen is black.

                                            If only the ribbon cable that feeds the right side of the screen (when viewed from the front) is disconnected, the left side of the screen shows picture and...
                                            04-24-2023, 08:20 PM
                                          • Loading...
                                          • No more items.
                                          Working...