Sony KDL-32L4000 LCD issues

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Deranged
    New Member
    • Jul 2010
    • 3

    #1

    Sony KDL-32L4000 LCD issues

    I am having an issue with this LCD TV. The picture is rolling like there is no horizontal hold. I have reflowed the T-Con and the tuner board with no success. I am thinking of replacing all the power supply caps next. Any idea what may be causing this and the best way to fix it? Thanks in advance.
  • Dgtech
    E. Technician
    • Apr 2009
    • 1462
    • Steeler

    #2
    Re: Sony KDL-32L4000 LCD issues

    I have never ran into this problem before. I cant see the caps on inverter board as being the problem though. Have you checked to see if it does this on a different source input? (Component, HDMI, etc...)
    The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

    Comment

    • Deranged
      New Member
      • Jul 2010
      • 3

      #3
      Re: Sony KDL-32L4000 LCD issues

      It does it on all inputs. Really it's just the main image and a ghost of it rolling. That is why I was thinking it may be a power supply issue.

      Comment

      • Wrog
        Badcaps Veteran
        • Oct 2009
        • 472

        #4
        Re: Sony KDL-32L4000 LCD issues

        Does the rolling or ghosting happen on the entire screen, or is it limited to certain sections?

        Comment

        • Deranged
          New Member
          • Jul 2010
          • 3

          #5
          Re: Sony KDL-32L4000 LCD issues

          Happens on the whole screen.

          Comment

          • Dgtech
            E. Technician
            • Apr 2009
            • 1462
            • Steeler

            #6
            Re: Sony KDL-32L4000 LCD issues

            I'm just throwing this out there. Oviously the high voltages for the lamps are working however, does anyone out there think that excessive ripple on the output to the processor board can possibly cause these symptoms? What is the name and numbers that appear on the main processor chip located on the processor board? I have a feeling one of the inputs have something to do with sync.
            The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

            Comment

            • PlainBill
              Badcaps Legend
              • Feb 2009
              • 7034
              • USA

              #7
              Re: Sony KDL-32L4000 LCD issues

              Originally posted by Dgtech
              I'm just throwing this out there. Oviously the high voltages for the lamps are working however, does anyone out there think that excessive ripple on the output to the processor board can possibly cause these symptoms? What is the name and numbers that appear on the main processor chip located on the processor board? I have a feeling one of the inputs have something to do with sync.
              It does sound like it could be a bad (noisy) LDO regulator.

              PlainBill
              For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

              Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

              Comment

              • Dgtech
                E. Technician
                • Apr 2009
                • 1462
                • Steeler

                #8
                Re: Sony KDL-32L4000 LCD issues

                Deranged, did you ever find a solution to this problem? I know someone with that same problem but on a different set. It was like the screen was not updating quick enough and the picture would slowly clear off of the screen from right to left. I have seen this on his youtube video and I'm inclined to say it is the main video processing board.
                The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS

                Comment

                • shovenose
                  Send Doge Memes
                  • Aug 2010
                  • 6575
                  • USA

                  #9
                  Re: Sony KDL-32L4000 LCD issues

                  i have never worked on a tv but if the same thing applies i vote it the cpu (does it have one)? is overheating and underclocking itself?

                  Comment

                  Related Topics

                  Collapse

                  • HarryZ
                    Sony XBR-49X800G networking issues
                    by HarryZ
                    Aloha. First post here, hope I can find someone to assist me.

                    I have a Sony XBR49X800G with streaming issues. The issue mostly occurs watching sporting events (basketball and football). The picture will sometimes get pixelated, sometimes freeze for a few seconds while the audio continues, sometimes it's jerky. In other words, you get a headache watching the TV.

                    My ISP provides 500 Mb service and I have verified that I have at least 500 Mb on ethernet, and something over 300Mb on WiFi. I installed Analiti on the TV (it's an Android TV) and I get ~ 70 Mb on both WiFi...
                    01-26-2024, 04:49 PM
                  • Carlos#2003%
                    Schematic de una Sony VAIO PCG-41217u, Sony VPCSB45FL (MBX-237), 1p-0117j01-a012 mbx-237.
                    by Carlos#2003%
                    Buenas mi nombre es carlos me uni al foro porque estoy buscando el schematic de una sony vaio pcg-41217u otras formas de escribirlo son 1p-0117j01-a012 mbx-237 numero de placa revision 1.2 o Sony VPCSB (MBX-237), en fin me gustaria y ayudaria un monton si alguien me puede dar dichi svhematic para hacer las mediciones de una laptop de la mencionada anteriormente(Sony VAIO PCG-41217U) con el fin de repararla dejo de funcionar solo prende el led de la bateria al pulsar el boton de power el disco empiesa a hacer ruido de actividad pero los leds del frontas no reflejan acividad y no enciende la pantalla....
                    02-15-2024, 07:52 PM
                  • PontyPCs
                    Sony Android TVs eMMC Issues
                    by PontyPCs
                    Hi people.

                    I have been trying to get my head round these issues with the eMMC putting the TV in to a boot loop condition, or completely dead, when a dump of the Boot 1, Boot 2 and USERDATA partitions have been made, the MLC lifetime counter has been reset, using the original eMMC with the RPMB partition intact and the eMMC is flashed with the original dump, Netflix and a few other Apps don't work. i assume all the DHCP keys and factory programmed RPMB access Key will be contained within the original dump, and as we are re-flashing the original eMMC i would expect every thing to work....
                    12-10-2023, 10:43 AM
                  • ptcriserx3
                    Sony trinitron crt bowed and side color issues
                    by ptcriserx3
                    Hi
                    Ive got a vintage 2001 sony trinitron flat tube tv

                    The image is slightly bowed and the left and right sides about 1-2in has fluctuating discoloration that comes and goes if i move or hit tv on sides

                    See many images attached...

                    Just windering if this is not fixable or something i can correct without getting too invloved

                    Im trying to sell the tv

                    Thanks
                    06-17-2023, 07:27 PM
                  • jb_Bak
                    Sony xbr-65x900c main board issues?
                    by jb_Bak
                    Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.

                    Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
                    Power Board Connector that goes to Main board
                    CN6401
                    Pin 01 NC
                    Pin 02 NC
                    Pin 03 "BL_ON": 0V
                    Pin 04 "N/C"
                    Pin 05 "STBY 3.3V": 3.5V
                    Pin 06 "GND": N/C
                    Pin 07 "AC_OFF"...
                    09-27-2021, 04:52 PM
                  • Loading...
                  • No more items.
                  Working...