Vizio E470i no power

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • AcGeorgiegirl
    Badcaps Veteran
    • Jun 2013
    • 202
    • USA

    #81
    Re: Vizio E470i no power

    Just a quick note of sincere thanks to all who helped me with my tv.... I had an unexpected surgery, and didn't get to tell you that I learned some valuable stuff, and appreciate your kindness! I am planning to try a go at figuring out which LED(s) are faulty as soon as I recover my thinker!

    Comment

    • newtothis
      Badcaps Legend
      • Mar 2013
      • 1556
      • england

      #82
      Re: Vizio E470i no power

      Hope you have a speedy recovery and no problem

      Comment

      • Nicegut
        New Member
        • Jan 2016
        • 5
        • USA

        #83
        Re: Vizio E470i no power

        Hey guys, anyone have these backlights available? Mines completely stripped down and i have bad strips and a few single ones not flashing on when I power on. Is there a way to fix these on the component level? Someone is offering repair service on E-bay. Thanks in advance!

        Comment

        • mcross
          Badcaps Veteran
          • Sep 2011
          • 201
          • USA

          #84
          Re: Vizio E470i no power

          I have the same tv. I do not get 12v , i get 6 to 7v on pins 6-7, rest is good
          Any ideas or do i need to post new thread
          mike

          Comment

          • Nicegut
            New Member
            • Jan 2016
            • 5
            • USA

            #85
            Re: Vizio E470i no power

            Originally posted by Nicegut
            Hey guys, anyone have these backlights available? Mines completely stripped down and i have bad strips and a few single ones not flashing on when I power on. Is there a way to fix these on the component level? Someone is offering repair service on E-bay. Thanks in advance!
            Fixed mine, soldered in 2 new leds.

            Comment

            • Daveleone
              Badcaps Veteran
              • Apr 2016
              • 267
              • USA

              #86
              Re: Vizio E470i no power

              I have this same TV and the same problem (when I turn on my TV the backlight comes on for a split second and then turns off). All of the voltages between the power supply and the main board look ok, and when the TV is powered on I can see the Vizio logo, and then "No channels programmed" on the screen (so the TV is actually powered on, just with no backlight).

              If I measure vout1 and vout2 to the LEDs during power-on I see them both jump up to ~129v for a second (when the light comes on) and then drop to ~69v (but not 0). What does it mean? Does that mean I have bad LEDs?

              Your help is greatly appreciated. Thanks!

              https://www.youtube.com/watch?v=AclsDZ8glK4

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #87
                Re: Vizio E470i no power

                Sounds like it. You probably get the about same readings without (no load) the LED connector in place, right?
                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

                • Daveleone
                  Badcaps Veteran
                  • Apr 2016
                  • 267
                  • USA

                  #88
                  Re: Vizio E470i no power

                  Originally posted by budm
                  Sounds like it. You probably get the about same readings without (no load) the LED connector in place, right?
                  Yes, I get ~exactly the same voltages (up to ~129v then down to ~69v) without the LEDs connected.

                  Know where I can get a set of LED strips that are in stock?

                  Comment

                  • budm
                    Badcaps Legend
                    • Feb 2010
                    • 40746
                    • USA

                    #89
                    Re: Vizio E470i no power

                    http://www.shopjimmy.com/catalogsear...Vizio+E470+LED

                    Not sure which LCD panel maker you have in your TV, so I would contact SJ to see.
                    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

                    • Daveleone
                      Badcaps Veteran
                      • Apr 2016
                      • 267
                      • USA

                      #90
                      Re: Vizio E470i no power

                      Originally posted by budm
                      http://www.shopjimmy.com/catalogsear...Vizio+E470+LED

                      Not sure which LCD panel maker you have in your TV, so I would contact SJ to see.
                      These are the strips I need and they're out of stock at ShopJimmy.
                      http://www.shopjimmy.com/lg-6916l-11...-12-strips.htm

                      I checked eBay but the cheapest is $18.95 PER STRIP (and there are 12 strips - ugh).

                      Any other source that has them in stock?

                      Comment

                      • dick_barton
                        Badcaps Legend
                        • Aug 2015
                        • 6642
                        • Wales

                        #91
                        Re: Vizio E470i no power

                        Maybe if you PM Nicegut who posted earlier and see where he got his from.
                        Willing to help but I'm no expert.

                        Comment

                        • Daveleone
                          Badcaps Veteran
                          • Apr 2016
                          • 267
                          • USA

                          #92
                          Re: Vizio E470i no power

                          Originally posted by dick_barton
                          Maybe if you PM Nicegut who posted earlier and see where he got his from.
                          He didn't buy replacement strips. He repaired his existing strips by soldering in new LEDs. I'd rather replace all my strips. Still looking for a source...

                          Comment

                          • dick_barton
                            Badcaps Legend
                            • Aug 2015
                            • 6642
                            • Wales

                            #93
                            Re: Vizio E470i no power

                            Maybe searching online for an identical model as yours but cracked screen could be the cheapest option.
                            Willing to help but I'm no expert.

                            Comment

                            • SLK001
                              Badcaps Veteran
                              • May 2014
                              • 264
                              • USA

                              #94
                              Re: Vizio E470i no power

                              I have one of these E470i-A0 with two LEDs out. Does anyone know of a source for the LEDs (components, not strips)? I've looked at both Digikey and Mouser, but I have yet to be able to sift through all the available devices. These devices have the large pad on the anode (+ side) of the LED. The LED size is 2.8mm x 3.5mm x 0.65mm.

                              Comment

                              • Daveleone
                                Badcaps Veteran
                                • Apr 2016
                                • 267
                                • USA

                                #95
                                Re: Vizio E470i no power

                                Can anyone tell me in what order the diffusion layers go (between the LEDs and the lcd panel)? I took the thing apart to repair the LEDs and can't remember in what order to put it back together, lol! I should've taken pictures.

                                There are 2 thin white plastic sheets, a thin highly reflective sheet, and a thick white plastic board. What order do they go in, from LEDs upward?

                                Your help is greatly appreciated!

                                Comment

                                • Daveleone
                                  Badcaps Veteran
                                  • Apr 2016
                                  • 267
                                  • USA

                                  #96
                                  Re: Vizio E470i no power

                                  I think I figured it out. I believe it goes - thick plastic board, thin plastic sheet, prism reflective sheet, thin plastic sheet (from LEDs upward).

                                  My guess is based on the diagram in Figure 4 on page 2 here: https://cdn.badcaps-static.com/pdfs/...214da42065.pdf

                                  I put the tv back together this way and I'm happy with the way it looks

                                  Special thanks to @nicegut for the help!
                                  Last edited by Daveleone; 05-14-2016, 01:36 AM.

                                  Comment

                                  • lfhlaw
                                    Senior Member
                                    • Mar 2014
                                    • 102
                                    • United States

                                    #97
                                    Re: Vizio E470i no power

                                    I came into this E470i-AO. I've replaced both boards(PSU and main) of this TV and I cant get it to Power up at all. Will a bad LED strip cause the TV to not power on at all on this TV?

                                    Comment

                                    • budm
                                      Badcaps Legend
                                      • Feb 2010
                                      • 40746
                                      • USA

                                      #98
                                      Re: Vizio E470i no power

                                      Originally posted by lfhlaw
                                      I came into this E470i-AO. I've replaced both boards(PSU and main) of this TV and I cant get it to Power up at all. Will a bad LED strip cause the TV to not power on at all on this TV?
                                      No indicator lights at all or what?
                                      Do you have meter to test Voltages?
                                      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

                                      • lfhlaw
                                        Senior Member
                                        • Mar 2014
                                        • 102
                                        • United States

                                        #99
                                        Re: Vizio E470i no power

                                        Originally posted by budm
                                        No indicator lights at all or what?
                                        Do you have meter to test Voltages?
                                        Nope no indicator lights at all. Normally, most Tv's will at least light up the indicator light, but even that's not coming.

                                        I do have a meter, but not very good with it lol.

                                        Comment

                                        • budm
                                          Badcaps Legend
                                          • Feb 2010
                                          • 40746
                                          • USA

                                          #100
                                          Re: Vizio E470i no power

                                          Well, at this point you need to upload good clear pictures of the top and bottom side of your power supply board, you will need to test Voltages on the connector that goes to the main 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

                                          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
                                          • PantherDave
                                            Microsoft Surface Pro (5th gen) model 1796 - no power
                                            by PantherDave
                                            Hi all!

                                            I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

                                            I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
                                            https://www.badcaps.net/forum/troubl...-hardware-devi...
                                            05-29-2024, 02:01 PM
                                          • GLISIT
                                            Asus Probook P5440UF-XB74 power issue
                                            by GLISIT
                                            Hi all,

                                            TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!


                                            I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!

                                            A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about...
                                            01-16-2025, 02:29 PM
                                          • sam_sam_sam
                                            Desoldering gun station modified to use a 18 volt @ 20 amp switching power supply
                                            by sam_sam_sam
                                            I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump

                                            One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
                                            03-31-2024, 02:12 PM
                                          • Document Archive
                                            HP Pavilion Power Pavilion Power 15-cb009nl Notebook 15 Specification for Upgrade or Repair
                                            by Document Archive
                                            This specification for the HP Pavilion Power Pavilion Power 15-cb009nl Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Pavilion Power 15-cb009nl boardview and Pavilion Power 15-cb009nl schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that...
                                            09-06-2024, 05:59 AM
                                          • Loading...
                                          • No more items.
                                          Working...