Re: How a plasma display panel (PDP) works

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Scommstech
    New Member
    • Oct 2013
    • 1
    • UK
    #1

    Re: How a plasma display panel (PDP) works

    Hi
    New to the forum. I am trying to repair a Samsung 42" Plasma TV and on the power board is a power factor correction circuit that I'm ok with but there is also a section described as inverter. It has three transformers fed from what looks like a totem driver with two inputs and also a Sem2005 IC which may be part of it. It seems to be something called a half bridge inverter driver.
    Has anyone any ideas what this circuit is doing. My Knowledge base really stops at the CRT TV's
    Regards Scommstech.
    Last edited by kc8adu; 10-21-2013, 08:57 AM.
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • SurrealMustard
      What parts can be salvaged from a plasma with a damaged display panel?
      by SurrealMustard
      I recently found myself the proud owner of a later-model Samsung plasma (the PN59D7000 for those keeping score at home) whose panel was, unfortunately, damaged in transport. I'm now preparing to part it out, but am curious as to whether or not any damage would have come to any of the components by attempting to power it up with the panel being broken. I read in one Avsforum thread (for whatever that's worth 😂) that the "scan driver boards" (by which I assume he means buffer boards) could be impacted by doing so. Is that actually the case? If so, since I don't intend on selling bad...
      03-09-2025, 08:29 PM
    • vf fa
      EIZO CX270 - No signal but Backlight and Panel works, logo works, admin menu works. OSD doesn't. What?!
      by vf fa
      Hi, so i guess I´ll have to make a new topic here, as i browsed through hundreds of other threads but couldn't find a solution to my problem yet.

      I got a EIZO CX270 from a friend. He said it doesn't work anymore and wont display any signal or take any OSD inputs. Well, as an aspiring photographer I couldn't say no, could I? Thought it was an easy game, replace a bad cap and have a working monitor. But nooope, it wasn't supposed to be this easy.

      So let me start with the problem description. I'll try my best not to skip anything so this might get rather long.
      ...
      01-31-2024, 01:40 PM
    • howardc64
      LG 49UJ6500 LCD panel lighter band that goes away
      by howardc64
      49UJ6500 LCD panel has a lighter band on top when first powered on. Goes away (or gets much fainter) after TV on for a few min. After powered off for awhile and power back on, same band appears. If powered on immediately after powering off, no or much fainter band. Running the latest firmware.

      Disassembled the TV and lifted the LCD panel during testing. Band is on the LCD panel (can see the band on the panel as I lift it slightly) Backlight is perfectly even at the top edge. Double checked LCD panel alignment in the frame and is perfect but since band moved with the panel, its on...
      02-19-2023, 12:13 AM
    • triplefour
      SAMSUNG UN50TU8000F rebooting, backlight ok. No 12v to panel boards.
      by triplefour
      TV flashes backlight then reboots over and over. no image. Client said it used to have image for a bit before rebooting. Got worse over time.

      tcon is built into mainboard.
      Only one cable goes to panel boards.
      there is a cable from one panel board to the other that links them.
      cost cutting measure that results in us having harder time to diagnose.
      removing the link to the second panel board allows TV to stay on with stable backlight but no image.
      used cut off tape method to mask 1 maybe 2 pins on the side of the cable that goes to that second panel board....
      07-28-2022, 07:59 PM
    • Storyteller12
      QN55Q60R Service Menu Panel Help
      by Storyteller12
      I had a the above tv qn55q60r that had a bad panel but everything else good. I had another panel here from un55nu6900 with bad leds and melted diffusers.

      I put the nu6900 panel in and powered it up and it does work but there are lines vertical lines.

      I was trying to change the panel type in the service menu but don’t see my exact panel. Anyway to fix this or someone have similar experience.

      the clear picture is the panel type from the service menus on the nu6900. The other 1 is the panel type that was set for the q60r with the bad panel....
      01-13-2024, 01:57 PM
    • Loading...
    • No more items.
    Working...