50PX4D-EB works but bad picture.

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • diif
    Badcaps Legend
    • Feb 2014
    • 6978
    • England

    #1

    50PX4D-EB works but bad picture.

    Works but a bad picture. On powering up i've heard a crackle and a pop that sounded to come from the ZSUS.
    VS and VA measure fine.
    Searching around i am suspecting the IPM module. Putting my hand on the heatsinks on the YSUS and ZSUS the top ones are warm the bottom ones are cold.
    Would this suggest that the YSUS has failed as well as the ZSUS ?
    Attached Files
  • aaronwt6
    Badcaps Veteran
    • Apr 2013
    • 855
    • US

    #2
    Re: 50PX4D-EB works but bad picture.

    I would guess that it's only the ZSUS based on the first picture. A failed YSUS on these 50X3 based LG plasmas would almost always result in a no picture scenario.
    Last edited by aaronwt6; 11-05-2015, 09:24 AM.

    Comment

    • diif
      Badcaps Legend
      • Feb 2014
      • 6978
      • England

      #3
      Re: 50PX4D-EB works but bad picture.

      Thanks, yes the fuse is fine. I'm going to pull the module off later.

      Comment

      • diif
        Badcaps Legend
        • Feb 2014
        • 6978
        • England

        #4
        Re: 50PX4D-EB works but bad picture.

        I managed to remove the top module from the board but couldn't see any damage through the clear silicone.
        The bottom module had black silicone inside so I couldn't see if there was any damage.

        Managed to find a ZSUS delivered for a good price and this has fixed the issue.

        Comment

        Related Topics

        Collapse

        • Tr0ll
          T-con suspect issue. Both ribbon cables no picture. One ribbon cable ok. (58pus8545)
          by Tr0ll
          Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.

          The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.

          Original T-con:
          Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.

          First replacement T-con:

          I thought it might be t-con and ordered new t-con from china(supposedly tested)...
          10-07-2023, 07:48 PM
        • JJAAMM
          SAMSUNG UN55KS9000F picture fades then distorts into vertical lines after 20 seconds
          by JJAAMM
          This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.

          Problem
          TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode...
          07-06-2023, 06:01 AM
        • 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 β€˜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 β€˜new' Tcon board this time, and
          ...
          06-09-2024, 10:28 AM
        • JDC
          LG 60PB6650 - Bad ZSUS (3.8v to YSUS instead of 16v)?
          by JDC
          Make and Model: LG 60PB6650-UA
          Issue: Turns on, no backlight, can hear static (no channel)

          I've been repairing TVs for a couple years now. I know how to use a multimeter for the most part and know how to test most components for shorts.

          The power board connects to the ZSUS and then connects to the YSUS. The ZSUS is where I believe the failure is because the 16v line is only 3.8V, even when I disconnect the ZSUS from the YSUS.

          This particular model seems to have a common failure with its YSUS. My goal earlier was to prove the YSUS was bad so I could...
          09-13-2018, 02:12 PM
        • Loading...
        • No more items.
        Working...