e701i-a3 no picture but backlights

Collapse
X
 
  • Time
  • Show
Clear All
new posts

  • jtcurtis
    replied
    Re: e701i-a3 no picture but backlights

    I have a 701i - a3 with same symptoms picture with no sound and back light comes on. I have 480 ohms on transistor on one leg + 1.7 on the other. Is that functional? When I check the power I have no electricity on the silver capacitor no readings on the other inductors except for 100 which gives me 12.3. The transistor also gives me no electricity reading. So it ohms good but no volts. What could be the issue?

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    Wasn't clear if it had side tabs or not, now we ARE.

    Leave a comment:


  • budwich
    replied
    Re: e701i-a3 no picture but backlights

    the "tape thing" doesn't work if there are side tabs which the set has. Good that you found them and "saved" the set.

    Leave a comment:


  • kevinm34232
    replied
    Re: e701i-a3 no picture but backlights

    FYI I tried the tape thing with no luck as I was going about blindly anyway. But the fix for this 70" was exactly the same for the D650i-B2.

    https://www.badcaps.net/forum/showthread.php?t=81665

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    I think most start on outside and work their way in, mostly trial and error.

    Leave a comment:


  • kevinm34232
    replied
    Re: e701i-a3 no picture but backlights

    I see what they're doing with the tape, but is there any method for which pins to cover or trial and error?

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    Guess you could try the "cut tape" method, sometimes you have to fuss with tape placement to get it right, might not work but doesn't cost much: https://www.youtube.com/watch?v=j7vl7-vZEL8
    Last edited by nomoresonys; 12-30-2019, 10:26 AM.

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    Maybe check the mlcc caps on driver board for shorts or very low ohms, guess it could also be a tcon issue.
    Last edited by nomoresonys; 12-30-2019, 10:18 AM.

    Leave a comment:


  • budwich
    replied
    Re: e701i-a3 no picture but backlights

    are you looking from the front? Side tabs (no boards) are only visible when the front plastic bezel is removed.... but a 65 may not have them. I think they do... 60 or smaller usually don't.
    Last edited by budwich; 12-30-2019, 09:38 AM.

    Leave a comment:


  • kevinm34232
    replied
    Re: e701i-a3 no picture but backlights

    Originally posted by nomoresonys
    @Kevin, take it slow, tab removal can not be undone, in a lot of the tvs that were fixed by this ingenious method, thanks Freakafter8, had horizontal lines running thru the display, which is not to say that it has to be, just that you want to make sure the tab/s are the problem before removal. Did you try the disconnect one ribbon cable at a time to see what you have on display?
    Yes I have repaired an E701i-A3 with the same issue and fix. One side of this panel is bad I just don't think there are side tabs on this one. I took one apart with a broken screen a couple weeks ago but didn't pay attention.

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    @Kevin, take it slow, tab removal can not be undone, in a lot of the tvs that were fixed by this ingenious method, thanks Freakafter8, had horizontal lines running thru the display, which is not to say that it has to be, just that you want to make sure the tab/s are the problem before removal. Did you try the disconnect one ribbon cable at a time to see what you have on display?

    Leave a comment:


  • kevinm34232
    replied
    Re: e701i-a3 no picture but backlights

    Has anyone messed with a Vizio D650i-B2? I have one where there's just ghosting picture of vertical lines but disconnecting one side of the panel at the T-Con board gives a good half picture on the other side of the screen. I have not taken the TV apart down to the panel to see if there are any side ribbons that can be removed. Panel # T650HVN05.9
    Last edited by kevinm34232; 12-29-2019, 10:38 PM.

    Leave a comment:


  • Biggnate81
    replied
    Re: e701i-a3 no picture but backlights

    I can't believe this post is still active 4 years later... Anyways i was recently given an E701i-a3. Using this thread i replaced the T-Con Board and disconnected the right side drivers from the LCD panel and too my surprise i got a nice picture on the TV. The only problem is the faint " white" spots around the bottom half of the screen, they are really only noticeable when a white picture is displayed on the screen. Is there a fix for these "white" spots or is this as good as its going to get? Sorry for the terrible picture, it is difficult to get a good picture of these spots.
    Attached Files

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    20 vdc, on meter black probe goes in com red probe in the one with v ma marking.
    Last edited by nomoresonys; 12-06-2019, 05:01 PM.

    Leave a comment:


  • grandjury3
    replied
    Re: e701i-a3 no picture but backlights

    [QUOTE=nomoresonys;929874]Can you post a picture of it? usually you just poke your probe down from the top a little til you hit metal, guess you could use some stripped bread ties.

    gotcha thanks, I am new to all this , trying to figure out what setting to set the multimeter to as well, I am new to this level of repair

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    Can you post a picture of it? usually you just poke your probe down from the top a little til you hit metal, guess you could use some stripped bread ties.

    Leave a comment:


  • grandjury3
    replied
    Re: e701i-a3 no picture but backlights

    Originally posted by nomoresonys
    Start with #3 below, try to do it just as instructed, as always BE VERY CAREFUL when working with powerboard, there are DEADLY voltages on HOT side.
    I attempted to test this voltage, I am unable to find a place to put the positive side on the powerboard because it is surrounded by plastic. what should I do? can I test it from the maine board side? thanks

    Leave a comment:


  • grandjury3
    replied
    Re: e701i-a3 no picture but backlights

    Originally posted by nomoresonys
    Did they tell you what symptoms the tv was exhibiting?
    Yes, when I turn it on the backlight comes on and no picture, but there is audio

    Leave a comment:


  • nomoresonys
    replied
    Re: e701i-a3 no picture but backlights

    Did they tell you what symptoms the tv was exhibiting?

    Leave a comment:


  • grandjury3
    replied
    Re: e701i-a3 no picture but backlights

    thank you so much for the quick reply! I'm going to try that right now , I'll post how it goes

    Leave a comment:

Related Topics

Collapse

  • howardc64
    TCL 55S425 few horizontal lines, potential failure on both side of panel/buffer board
    by howardc64
    All left and right refers to looking from rear of TV (or looking from front with TV upside down)
    • TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
    • Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
    ...
    07-24-2025, 05:17 PM
  • 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
  • kca
    LG 82UN8570AUD ~ TCON or PANEL?
    by kca
    Hello all ~

    Hope this finds you well. This LG 82UN8570AUD (April 2021 model) 4K UHD television has full audio capabilities but video is compromised / problematic.

    When I picked up this large LG tv it had a full black screen upon startup. Previous owner said it just went black one day. No popping sound or anything else of note.

    I got the display to work by taping off several traces of the right-hand side ribbon cable on the TCON that leads from TCON to PANEL. However, despite dozens and dozens of attempts to find the right combination / range of traces taped...
    08-31-2025, 06:38 AM
  • Loading...
  • No more items.
Working...