insignia has audio but no sound

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • shadetreetrader11
    Badcaps Veteran
    • Oct 2015
    • 230
    • USA

    #1

    insignia has audio but no sound

    I have a insignia ns-39d400na14. I turn it on and there is only audio but no video. The back light comes on. If you push the menu,volume, and channel button nothing shows up on the screen. But it will change the channel and the volume will change. I guess at this point I'm not sure how to diagnose it any further. I attached a couple pictures if you need more let me know.
    Attached Files
    Last edited by shadetreetrader11; 01-23-2016, 04:06 PM.
  • CapLeaker
    Leaking Member
    • Dec 2014
    • 7972
    • Canada

    #2
    Re: insignia has audio but no sound

    so you have audio, but no video? Check the T-Con board

    Comment

    • shadetreetrader11
      Badcaps Veteran
      • Oct 2015
      • 230
      • USA

      #3
      Re: insignia has audio but no sound

      Is the t-con board part of the main board ? Maybe I should have taken some better pics
      Last edited by shadetreetrader11; 01-23-2016, 05:48 PM.

      Comment

      • CapLeaker
        Leaking Member
        • Dec 2014
        • 7972
        • Canada

        #4
        Re: insignia has audio but no sound

        no. It is underneath that metal shield bottom middle. follow that cable from the main board.

        Comment

        • shadetreetrader11
          Badcaps Veteran
          • Oct 2015
          • 230
          • USA

          #5
          Re: insignia has audio but no sound

          Ok how in the world is a guy supposed to change out this board with all the ribbon cables intertwined everywhere? Or am I making a bigger deal out of it than it really is? Here is more pics
          Attached Files

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: insignia has audio but no sound

            It is integrated T-CON to the panel, not replaceable. Do you see that very small green fuse F1 with 'O'? printed on top right next to the big black diode on the left of the connector? Check to see what DCV you have at both ends with ref to the chassis GND.
            https://www.badcaps.net/forum/attach...7&d=1453610978
            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

            • shadetreetrader11
              Badcaps Veteran
              • Oct 2015
              • 230
              • USA

              #7
              Re: insignia has audio but no sound

              Fuse is good. 12v on each side of fuse

              Comment

              • CapLeaker
                Leaking Member
                • Dec 2014
                • 7972
                • Canada

                #8
                Re: insignia has audio but no sound

                well... that thing is screwed. Only thing you could do now is to check the LVDS cable with the oscilloscope, while turning on and off the menu all the time. You should find the video signal and see if it changes. Then you know for sure the main board is good.

                Comment

                • shadetreetrader11
                  Badcaps Veteran
                  • Oct 2015
                  • 230
                  • USA

                  #9
                  Re: insignia has audio but no sound

                  Yes sir. It had a video sig. So I guess I'll give up on this one and move on to the next. Wanted to comment on the new site. Very nice. Thanks for the help guys.

                  Comment

                  Related Topics

                  Collapse

                  • ChaosLegionnaire
                    what i went through dealing with my mobo with dead onboard sound!
                    by ChaosLegionnaire
                    so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!! what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol!

                    i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing...
                    09-13-2022, 09:02 AM
                  • i_am_patch
                    Roland KR-3500/4500 Digital Piano. Crackling audio sound on all keys -Fixed
                    by i_am_patch
                    Hi All. I had a Roland KR-3500 Digital Piano (similar to the KR-4500) that exhibited a Crackling audio sound on all keys. After reading somewhere about someone with a similar issue who had replaced all the Electrolytic caps I decided to also go down that route. (Spoiler : It worked !) After some basic troubleshooting I determined that it could be noise feeding thru from the Keyboard scanning since the Demo tunes played back undistorted and the Audio amp / speakers were fine ( Inserted an Audio signal into the rear Audio input). After extracting the main board from the shield, I replaced 7 Capacitors...
                    04-30-2024, 08:20 PM
                  • Piaskos
                    Dell Vostro 5490 - no sound, no audio device
                    by Piaskos
                    Hi, i've got problem with Dell Vostro 5490.
                    Board - Mantis CML 18788-1

                    Windows says "no audio device detected". The other functions work properly.

                    What i've done:

                    1. I checked motherboard

                    2. I changed audio codec (ALC3204)

                    3. I reflashed bios with clear ME

                    4. Audio is enable in bios

                    5. Both speakers are good

                    6. After installing the drivers from the Dell website, the devices visible in the manager:
                    - Audio for intel displays
                    - Intel Smart Sound Technology...
                    01-30-2023, 02:58 AM
                  • dicky96
                    American Audio VLP1500 Distorting on one channel
                    by dicky96
                    Hi guys I have a VLP1500 amplifier here - one channels works fine and the other channel distorts even at low volume settings

                    Protection and Clip LED are off

                    There is something wrong with the BIAS voltages around T16 and T18 (in particular) on the bad channel

                    I tested all diodes and transistors in this area in circuit with diode mode - both channels seem identical. Same in resistance mode across all the resistors here.

                    The output DC voltages on pin1 and pin8 of the 5532D dual op amp at the input of each amplifier module are the same, and the audio...
                    07-13-2022, 05:25 AM
                  • CapLeaker
                    Motorola Minitor V pager no audio / sound repair
                    by CapLeaker
                    Got a bunch of Motorola Minitor V pagers from Fire Departments here trying to fix some out of the non working ones. These pagers are known for either no sound / audio or they donโ€™t charge. The internet is full of suggestions like metal shavings inside the speaker?
                    Anyway so I took one of the Minitorโ€™s apart for my amusement in order to see why that is and nobody can fix em. There are no service manuals or schematics for these that I know of. Howeverโ€ฆ I did find the problem!

                    On the main board of this unit where the speaker connects to there is a metal shield....
                    06-10-2025, 07:44 PM
                  • Loading...
                  • No more items.
                  Working...