Samsung LA40C530 LCD Backlight problem

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • provider10
    Senior Member
    • Mar 2016
    • 52
    • South Africa
    #1

    Samsung LA40C530 LCD Backlight problem

    Hi All

    Hope you can help . Got this Samsung LCD TV LA40C530
    Problem is with the backlights that intermittently switch off. They can be ok for more than 8hours, then next day only stay on for a few minutes.
    When they are off all voltages seem to be ok on Psu the BLu-on is OK.

    Any Ideas

    Thanks

    James
    Last edited by SMDFlea; 07-10-2021, 06:08 AM. Reason: LA40C530
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • fanaticgames
      Samsung UE32D4010 Backlight problem, led ok
      by fanaticgames
      hello I have a backlight problem on this TV, if I unplug the cn201 cable the backlight works perfectly and the voltages are 13v if I connect the cn201 cable the backlight goes off and the voltage drops to 12v, I assume it's a motherboard problem, the question is has anyone had a similar problem? I want to understand if the motherboard is repairable or it's not worth wasting time...
      02-22-2023, 09:46 AM
    • Document Archive
      Samsung Galaxy Book 2 Notebook Specification for Upgrade or Repair
      by Document Archive
      This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...
      09-07-2024, 05:50 AM
    • sandinemail@hotmail.com
      Samsung BN44-00284A Backlight problem
      by sandinemail@hotmail.com
      Samsung BN44-00284A in a Samsung LE40B755 TV bought 2009.

      In November 2020 the TV didn´t turn on only flashing red diod on front off TV.

      I then opened up the TV and found bulged capacitors on the inverter/powerboard.

      I changed all capacitors except the main two 450V 100uf capacitors.
      The TV has worked pefectly since.

      But this week it started to turn off the backlight. Audio on TV still works.
      Sometimes it turn off the backlight after 10 seconds but sometimes it works for hours.

      Any suggestions on what might...
      02-15-2023, 05:10 AM
    • sansanpartida
      Samsung QE82Q70RAT no backlight
      by sansanpartida
      Hi everyone!

      Hope you're all having a great day, and thank you very much for stopping by and taking the time to read this post to help me with my parents' Samsung TV.

      My issue: No backlight.

      Model: QE82Q70RAT
      Type No: QE82Q70RAT

      The TV was already serviced by Samsung once under warranty for the exact same issue, but six months after the fix, the backlight went out again. Now, Samsung is asking for nearly the same price as a brand new TV to fix this with the same 6-month guarantee.

      So hopefully, I can fix this cheaper.
      ...
      05-22-2024, 06:56 AM
    • howardc64
      Samsung UN55NU7300F Curved TV. Half side backlight out. Fixed by just removing the rear snap cover
      by howardc64
      TV was fixed just after removing Samsung's rear snap cover.

      This curved TV's construction is rather interesting. When the snapped on back is removed, rest of the TV will relax the curvature. Top of LCD panel is loose as it wants to straighten out against the slightly curved bezel. Snapped back provide most of the curvature shape. So just simple disassembly of rear cover will allow the rest of the TV frame to relax its curvature. Thats probably what fixed it but no idea which connection. 4x LEDs are edge lit.

      Maybe PSU->backlight connector didn't have a good contact?...
      07-23-2025, 12:34 AM
    • Loading...
    • No more items.
    Working...