e701i-a3 no picture but backlights

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • budwich
    Badcaps Legend
    • Jul 2015
    • 3097
    • Canada

    #561
    Re: e701i-a3 no picture but backlights

    great... $50 well spent

    Comment

    • freakaftr8
      Badcaps Legend
      • Oct 2012
      • 3743
      • USA

      #562
      Re: e701i-a3 no picture but backlights

      Lol good to know that this fix is still holding up! Hi all! I'm back from the dead.

      I have to report that original Vizio that I fixed last year when we first found this out is still working fine to this day. This Sony 70 inch however recently died. It looks as if the other ribbon drivers on the opposite side went bad. The very bottom ribbon and driver on that side. Since this is a 3D panel same architecture but just a smidge different could have been a factor.
      Did I leave the soldering iron on?

      Comment

      • splatee
        Senior Member
        • Jul 2016
        • 95
        • USA

        #563
        Re: e701i-a3 no picture but backlights

        I am not sure if this is a problem with the vizio but watching direc tv I get a lot of what looks like macro blocking on dark scenes. It also has sort of a bluish look to it. I replaced my 70 inch rear projection tv with the vizio. I am going to swap hdmi cables and try a blu ray to see if it is still present. But it was bad enough for my wife to comment on how bad it looked. She wanted me to put the other tv back.

        Comment

        • budwich
          Badcaps Legend
          • Jul 2015
          • 3097
          • Canada

          #564
          Re: e701i-a3 no picture but backlights

          hmmm... what settings have you adjusted? I think "macro blocking" is a "transmission/decoding issue" not usually associated with the display "work". As for color, the first question needs an answer especially comparing to a rear projection tv. :-)
          Last edited by budwich; 10-10-2016, 06:45 AM.

          Comment

          • splatee
            Senior Member
            • Jul 2016
            • 95
            • USA

            #565
            Re: e701i-a3 no picture but backlights

            I ran DVE calibration bluray disk on both the "standard & calibrated" presets. On nice bright scenes the picture looks great. I am going to make a few changes. First I had swapped out my DIRECTV Dvr that I had originally hooked up to the Sony and had replaced it with one of the mini genie boxes. Also I changed the hdmi cable to a longer one. I am going to put everything back to the way I had it and test it. I will try and get some pics up.

            Thank you

            Comment

            • splatee
              Senior Member
              • Jul 2016
              • 95
              • USA

              #566
              Re: e701i-a3 no picture but backlights

              Also could it be a t-con board issue perhaps? Before I had swapped out the one mosfet on the original board I had ordered a "new" spare from EBay which should be here today.

              Comment

              • splatee
                Senior Member
                • Jul 2016
                • 95
                • USA

                #567
                Re: e701i-a3 no picture but backlights

                Here is a pic
                Attached Files

                Comment

                • splatee
                  Senior Member
                  • Jul 2016
                  • 95
                  • USA

                  #568
                  Re: e701i-a3 no picture but backlights

                  And another. Swapped out direct tv box and used different HDMI cable.
                  Attached Files

                  Comment

                  • splatee
                    Senior Member
                    • Jul 2016
                    • 95
                    • USA

                    #569
                    Re: e701i-a3 no picture but backlights

                    Tried different HDMI ports and also component and still same issue. Almost like the shadow have a greenish sort of tinge and a lot of noise to them.
                    Attached Files

                    Comment

                    • splatee
                      Senior Member
                      • Jul 2016
                      • 95
                      • USA

                      #570
                      Re: e701i-a3 no picture but backlights

                      Just hooked up PS3 and put the Dark Knight on and was same thing. If I set the black detail to high and gamma all the way up it lessens the noise but still noticeable. I will see if the replacement t-con will fix it. Oh and also I have a few of those small white pin dots on the screen.

                      Comment

                      • freakaftr8
                        Badcaps Legend
                        • Oct 2012
                        • 3743
                        • USA

                        #571
                        Re: e701i-a3 no picture but backlights

                        Macroblocking is most likely a problem with the main board. I suppose it could be a t-con board but have you tried resetting all the cables? Also the white pin spots. There's nothing you can do about that is a defect in the polarizer is behind the LCD panel I noticed this model as they age gets worse and worse. That was a sharp failure
                        Did I leave the soldering iron on?

                        Comment

                        • splatee
                          Senior Member
                          • Jul 2016
                          • 95
                          • USA

                          #572
                          Re: e701i-a3 no picture but backlights

                          Originally posted by freakaftr8
                          Macroblocking is most likely a problem with the main board. I suppose it could be a t-con board but have you tried resetting all the cables? Also the white pin spots. There's nothing you can do about that is a defect in the polarizer is behind the LCD panel I noticed this model as they age gets worse and worse. That was a sharp failure
                          Thanks for the info. I had ordered a spare t-con just in case the original I could not fix. I will swap it out and see. As for cables I reseated all of them. I wonder if the LVDS cables may cause this as well? I ran across another post about on some vizios there was issues with green tinge in the blacks that was due to bad LVDS cables.

                          Thank you

                          Comment

                          • freakaftr8
                            Badcaps Legend
                            • Oct 2012
                            • 3743
                            • USA

                            #573
                            Re: e701i-a3 no picture but backlights

                            Could be lvds cable. They seem to affect black areas more than lighter shades but I'm more suspecting main board or tcon. I'm leaning more towards tcon.
                            Did I leave the soldering iron on?

                            Comment

                            • vanvock
                              New Member
                              • Sep 2016
                              • 2
                              • USA

                              #574
                              Re: e701i-a3 no picture but backlights

                              Count another one fixed. It was the right side on this one. I bought another card & blew the trans. on it then bought 5 trans. so I have the card & 4 trans. left over if anyone is interested. Thanks to all for the generous input.

                              Comment

                              • splatee
                                Senior Member
                                • Jul 2016
                                • 95
                                • USA

                                #575
                                Re: e701i-a3 no picture but backlights

                                Swapped out the t-con with the spare I got from eBay. Still same issue with the shadow/dark area of the picture with the noise. I did a factory reset from the service menu and went through the setup process.

                                If I set the gamma to 2.4 and black level to high I can clear it up a bit but I do not like the overall image. Also noticed that where the noise is it has a bluish tinge to it. If I go into the color correction and adjust I can clear it up some as well. I am wondering if this is a panel problem now?

                                Comment

                                • splatee
                                  Senior Member
                                  • Jul 2016
                                  • 95
                                  • USA

                                  #576
                                  Re: e701i-a3 no picture but backlights

                                  Here are a few more pics. Also I just noticed one thing. The replacement board is labeled ZH and original is a ZG in the part #. It almost seems like the replacement is worse with the noise.
                                  Attached Files

                                  Comment

                                  • splatee
                                    Senior Member
                                    • Jul 2016
                                    • 95
                                    • USA

                                    #577
                                    Re: e701i-a3 no picture but backlights

                                    Here is another pick of Avia calibration DVD that shows more of the issue. If you notice the bar that is suppose to be the darker shade of black has more of the noise as bad.
                                    Attached Files

                                    Comment

                                    • splatee
                                      Senior Member
                                      • Jul 2016
                                      • 95
                                      • USA

                                      #578
                                      Re: e701i-a3 no picture but backlights

                                      Originally posted by euroryde
                                      So I thought I would try and fix another 70" as I had success the first time but I have ran into a problem, quick version. after removing tabs, new t-con tv is now working again but the screen quality isn't very good real pixelated / gassy looking pictures attached. I have tried cleaning all cables changed setting but nothing seems to be helping. Thnaks
                                      Going through the thread again I came across this posting at #397.

                                      This is exactly what I have going on. He tried a replacement mainboard and still no change.
                                      Last edited by splatee; 10-13-2016, 05:55 PM.

                                      Comment

                                      • freakaftr8
                                        Badcaps Legend
                                        • Oct 2012
                                        • 3743
                                        • USA

                                        #579
                                        Re: e701i-a3 no picture but backlights

                                        That's odd the only other thing I could possibly think of is dry cleaning the contacts of the lvds cable with denatured rubbing alcohol
                                        Did I leave the soldering iron on?

                                        Comment

                                        • splatee
                                          Senior Member
                                          • Jul 2016
                                          • 95
                                          • USA

                                          #580
                                          Re: e701i-a3 no picture but backlights

                                          Originally posted by freakaftr8
                                          That's odd the only other thing I could possibly think of is dry cleaning the contacts of the lvds cable with denatured rubbing alcohol
                                          That was going to be my next step. I was also going to check the side panel driver ribbon cable also.

                                          Thank you

                                          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...