Sharp LC-40LE820UN Dead

Collapse
X
Collapse
+ More Options
Posts
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • kevinm34232
    Badcaps Legend
    • May 2012
    • 1884
    • USA
    #1

    Sharp LC-40LE820UN Dead

    I need some help with this TV.. Symptoms are TV is dead, only voltages to main board are BU5V (5V), and have 166V on the main PS caps.

    I thought it was a bad main board, sent it in to PTS, and they tested and said was good and thought it was PS board. I checked the LED's with LED tester and they seem fine.

    Can someone help me with forcing the PS on, so I can see if they light up the LED's and give other voltages without the main board connected?
    Attached Files
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • advant
      Driving a Sharp TCON/panel with a universal main board
      by advant
      This thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.

      I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match...
      02-03-2020, 12:25 AM
    • Asraf Atb
      Help Needed: Samsung UE55MU8000 Dead - Possible Main Board Issue
      by Asraf Atb
      Hi everyone,

      Im looking for some advice regarding my Samsung UE55MU8000 TV with main board model BN94-11606C. The TV suddenly stopped turning on and now shows no signs of life at all not even the standby light at the bottom.

      Initially, I suspected an issue with the PSU, so I took it to a repair center. They tested it and confirmed that the PSU works perfectly, even on other TVs. Based on that, I started investigating the main board.

      I disconnected the main board from the PSU, and the backlight turned on, which seems to confirm the main board is the issue....
      1 Photo
      01-27-2025, 05:02 PM
    • Dani_2024
      Sceptre U550CV-UMR 4K LED, Bad Caps on Main Power Board?
      by Dani_2024
      Hi and thanks in advance for any input you might provide!
      I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
      Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO

      Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this...
      5 Photos
      10-28-2024, 05:06 PM
    • ygorsan
      LG 55NANO77SRA TV ā€“ Menu scrolling by itself even after removing button board (Main Board EBU66792103)
      by ygorsan
      Hi everyone,




      Iā€™m looking for help with a persistent issue on an LG TV model 55NANO77SRA, which uses the main board EBU66792103 (also used in LG UQ80 and NANO75/NANO80 series).







      šŸ§© Problem Summary:
      • The TV keeps scrolling through the menu or selecting items by itself.
      • I removed the physical button board (the entire panel with power and volume buttons) and also disconnected the flat cable (CN202) from the main board.
      • The remote control is not in use (batteries removed), and the TV still shows the same behavior.
      • I
      ...
      07-28-2025, 08:34 AM
    • 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...