Hisense (Emerson) LTDN42V68US No Picture/Sound

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • barryra
    Senior Member
    • Aug 2013
    • 107
    • USA
    #1

    Hisense (Emerson) LTDN42V68US No Picture/Sound

    The customer said the tv had no picture or sound.. it had been unplugged for several weeks before I received the tv. I plugged it in & it turned on & worked fine... but after I turned it off & on again... there is no picture or sound. Just the red power light.

    The caps look good on the boards.

    Does this sound like a bad main board? Thanks for your info.
    Tags: None
    • barryra
      Senior Member
      • Aug 2013
      • 107
      • USA
      #2
      Re: Hisense (Emerson) LTDN42V68US No Picture/Sound

      Ok.. don't everyone reply at once.. it may crash the site! sheeesh

        Comment

        • truep
          Badcaps Veteran
          • Aug 2010
          • 373
          • USA
          #3
          Re: Hisense (Emerson) LTDN42V68US No Picture/Sound

          Open it up.
          1. check the caps on the power supply board. they should all be perfectly flat on top.
          Note this is just a quick check, they can still be bad if they are flat.
          2. replace all the bad ones with Panasonic FM, or FC series caps (or others recommended in the forum)
          3. Check all voltages in and out of the power supply and let us know. Pay special attention to any that say ON, pr PS on.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Hisense (Emerson) LTDN42V68US No Picture/Sound

              Any pictures of the boards for us to look at to see how they are connected?
              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

                Previous template Next

                Related Topics

                Collapse
                • TR103
                  Samsung TV model UE50TU: rebooting, backlight, sound, but no picture
                  by TR103
                  Hi, I have a Samsung UE50TU with:
                  - sound and backlight, but no picture
                  - when it arrived, it had a picture for a few seconds
                  - it keeps rebooting
                  - without ribbon cable between the two panel boards, it does not reboot but I have no picture
                  - without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
                  - when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.

                  - without cable between mainboard and lcd panel and with a jumpered...
                  01-22-2025, 04:12 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
                • Ierwin
                  Samsung UE60KU6079 backlight okay mainboard responsive, no picture, no sound
                  by Ierwin
                  Hello everyone,
                  Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
                  The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
                  He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
                  I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
                  Anyway I still fully expect that there has been something seriously damaged...
                  05-13-2025, 03:31 PM
                • jchang
                  Samsung UN70NU6900F no picture and no sound
                  by jchang
                  Hi all

                  I was just given a Samsung TV with the issue. I read various threads and videos and attempted the ribbon tape method to gain an image, but no luck.



                  Symptom:
                  No picture no sound.
                  When I plug in the power cord, Backlight LED turns on for a half second and then turns off. The red LED next to the power button located center bottom flashes 2 or 3 times. When the power button is pressed after, it does the same thing.
                  No sound at all.



                  What I tried:
                  1. I tried unplugging the left or right ribbon...
                  01-09-2023, 06:28 PM
                • jake12021
                  Hisense 65p7 sound but no picture
                  by jake12021
                  Hi all,
                  I have got a Hisense 65p7 tv. The red standby light is solid when plugged in. When turned on with remote the red standby light flashes 17 times and then stays off. The screen lights up the smallest amount and need to turn off with remote again to get back to a solid standby light. Ive already gone through replacing power board and main board and neither fixed the issue. The back lights under the back panel are lit up when tv is on and sound still works. Wondering if I should try to replace the t-con board? Or is there any tests for the leds? (I have a voltmeter)...
                  02-19-2023, 08:43 PM
                • Loading...
                • No more items.
                Working...