Lg55 led tv hdmi input problem need help

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • shopy
    New Member
    • Jan 2012
    • 7
    #1

    Lg55 led tv hdmi input problem need help

    i have a strange problem with my LG 55 led tv HDMI INPUTS.

    when i connect the cable tv HDMI to the HDMI input of the lg led tv .the tv says NO SIGNAL .but if i connect to the same inputs a china tv box all is working fine. all the HDMI inputs are the same. non of them work with cable tv but work well with the china tv box.

    this happens only on this specific tv another tv i have work fins with the cable tv and with the china tv box.

    i cant figure way it happens in this tv only.

    thanks, to the helpers?
    Tags: None
    • Davi.p
      Hobbist Tech
      • Sep 2009
      • 4316
      • Italy - Milan
      #2
      Re: Lg55 led tv hdmi input problem need help

      this happens only on this specific tv another tv i have work fins with the cable tv and with the china tv box.
      the other tvs with the same cable tv connector/ cable?

        Comment

        • shopy
          New Member
          • Jan 2012
          • 7
          #3
          Re: Lg55 led tv hdmi input problem need help

          yes the other tv are the same hdmi inputs and all work fine.

            Comment

            • Davi.p
              Hobbist Tech
              • Sep 2009
              • 4316
              • Italy - Milan
              #4
              Re: Lg55 led tv hdmi input problem need help

              Can you post a Picture or the label code of the.main board? In other way you can search the service menu for a function to rewrite the HDMI edid, in Samsung it is posible, LG i dont know, needed soecial smartphone app for emulaten LG service menu and a IR blaster / dongle
              Last edited by Davi.p; 12-06-2020, 10:01 AM.

                Comment

                Previous template Next

                Related Topics

                Collapse
                • s_henya
                  EPSON EB-X18 No HDMI input
                  by s_henya
                  Hi all,

                  Not my usual equipment repair, Projector works great but no HDMI input.
                  motherboard: H550MA_R1
                  HDMI socket was a bit chipped on the side, but no critical damage, i replaced it anyways but still no signal.

                  Im assuming other damage in the mainboard.
                  Can anyone give me some pointers on where to begin?...
                  06-13-2025, 09:06 AM
                • rp748
                  HP E233 display HDMI no input
                  by rp748
                  Hi

                  The display is working great except for the HDMI. VGA, DisplayPort is fine.
                  i have tried several cables and sources with no luck.

                  Board number is 715G8912- but i didn't find its schematic anywhere.
                  The main chip is RTD2526FR which i didn't find its datasheet as well.

                  Main board looks fine without any blown components or soldering issues.
                  When an HDMI source is connected the screen goes blank for a few seconds and then it says, "HDMI is inactive" and enters to sleep mode.

                  Tested Components:
                  HDMI...
                  09-02-2023, 10:05 AM
                • japlytic
                  Not all TVs can handle surround sound on a HDMI input
                  by japlytic
                  With a home theatre PC connected to a TV via HDMI, Windows reveals that the TV only supports stereo sound even though the TV has a HDMI ARC connection to an AV receiver which is powered on; I also had an issue that the AV receiver does not always retain the input setting for routing the HTPC video through to the TV in standby.
                  So I connected a second HDMI cable to the HTPC and set it to duplicate the video outputs, but I had random audio dropouts when playing content with surround sound being passed to the AV receiver (dropouts did not occur when I replayed the content where it dropped...
                  08-31-2022, 10:09 PM
                • ugamazing
                  820-02020 Super Weird Issue: Keyboard Input Character Map "Wrong"?
                  by ugamazing
                  So, I have a really bizarre issue that I'm struggling to identify the cause of. Working on an 820-02020 board with some bizarre keyboard/input-source character mapping. My suspicion is a possible damaged SPI ROM (U1970), perhaps, but I'm really not sure in this case:

                  1. The issue is pretty weird, but when installing MacOS, I noticed my WiFi password did not work. I quickly realized the special characters (!@#$%^& etc) were not mapping correctly.

                  2. I noticed the keyboard layout/input-source is defaulting to JAPANESE every single time I restore the board. I am not...
                  04-10-2024, 08:06 AM
                • FrancescoV
                  Onkyo HT-R390 no sound output, video output ok
                  by FrancescoV
                  Good morning everyone,
                  I'm trying to repair an onkyo ht-r390 that has no sound output, despite the volume being at maximum, the rest seems to work; the video output signal (coming from an hdmi input) is present, but the audio is absent. Similar situation if I send an audio signal from any input I have no output.

                  The firmware reported is the following:
                  M:1.00/11107BLP
                  D:?.??/????????
                  O:1.00/11107AL

                  The DSP firmware given the question marks seems corrupt.

                  On the BCHDM-0678 - 25140678 - QPWBCHDM0678A0 board the chip that usually seems...
                  05-11-2025, 02:59 AM
                • Loading...
                • No more items.
                Working...