lcd picture faded to black

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • attenuator1222
    Member
    • Jan 2013
    • 12
    • uk

    #21
    Re: lcd picture faded to black

    Originally posted by nomoresonys
    my bad, read it wrong, I thought it read went completely black, gilly is right if no light reaction when tcon is rocked, then more than likely the tcon or tcon cable.
    i hope so ..
    what i did was remove the connector and move it in and out gently
    i will do again just to be sure
    i really cant afford a new tv at the moment
    it was weird when the fault initially occured(months ago, i dont watch tv anyway) i was watching red dwarf and the picture slowly started to get darker...

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12075
      • U.S.

      #22
      Re: lcd picture faded to black

      I guess it's possible the backlight/s are bad or going bad.

      Comment

      • selldoor
        Slow Learner
        • Dec 2010
        • 7870

        #23
        Re: lcd picture faded to black

        I am still not too sure about there only being 5v into the Tcon - I am not sure that is enough. Can you trace back from the fuse to the contact/s on the connector then follow the cable back to the main board and then follow the 5 volts to see where it comes from. Then post a clear picture to show us the area.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

        • gilly1984
          Badcaps Veteran
          • Jun 2012
          • 751
          • UK

          #24
          Re: lcd picture faded to black

          Just checked the service manual for my sharp tv with a very similar tcon and that says 5v too. Its marked also on the mainboard as "5v LCD"
          Do NOT touch heatsinks when testing for voltages as they may be LIVE!

          Comment

          • selldoor
            Slow Learner
            • Dec 2010
            • 7870

            #25
            Re: lcd picture faded to black

            Originally posted by gilly1984
            Just checked the service manual for my sharp tv with a very similar tcon and that says 5v too. Its marked also on the mainboard as "5v LCD"
            Thanks Gilly - couldnt find it myself
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

            Comment

            • gilly1984
              Badcaps Veteran
              • Jun 2012
              • 751
              • UK

              #26
              Re: lcd picture faded to black

              Service manual for a sharp tv, has the same tcon as yours.

              Sorry, had to link it because its too big to upload here.

              Do NOT touch heatsinks when testing for voltages as they may be LIVE!

              Comment

              • attenuator1222
                Member
                • Jan 2013
                • 12
                • uk

                #27
                Re: lcd picture faded to black

                thanks everyone for your help
                ive ordered a new tcon and will update this thread with how it went in about 2 weeks i imagine

                Comment

                • attenuator1222
                  Member
                  • Jan 2013
                  • 12
                  • uk

                  #28
                  Re: lcd picture faded to black

                  ok the tcon didnt fix it
                  im just about to kick fukout of this telly
                  any ideas?

                  Comment

                  Related Topics

                  Collapse

                  • 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
                  • Mgiffune
                    Samsung UN60EH6000F Black Screen, Backlight and Sound Good. Power Cycle Returns Picture
                    by Mgiffune
                    I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.

                    I ordered a supposedly ‘new' Tcon board this time, and
                    ...
                    06-09-2024, 10:28 AM
                  • 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...