Proscan 50" PLDED5066A-E no backlights

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  • max789
    Samsung UE48H6410 replaced Mainboard but backlights doesnt go on
    by max789
    Hello, I have a problem with my Samsung UE48H6410SSXZG with the main board BN41-02156A and the power board BN44-00709A. Everything seemed like this, the TV could no longer be switched on, the standby LED always flashed 5x2 times. Backlight was off and no sound from TV. Also made the flashlight test and there was no picture.

    I made the following tests:
    1. Disconnected the main board from Power Board = backlight works.
    2. Connected the main board and disconnected the T-Con = backlights does not work.

    So I ordered a main board from Ebay also BN41-02156A but from...
    01-18-2024, 06:56 AM
  • bpcannan
    VIZIO M557-G0: Backlights or ???
    by bpcannan
    'Morning,
    I get sound and picture when powering on the TV and its stays that EXCEPT that the left half of the screen will dim every few seconds then return to normal while the right side of the screen performs as designed.

    Did the soft and hard reset options pulling the plug, using the reet option in the vizio menu to no avail.

    I checked the mainboard - found some popped capacitors so replaced it - but that did not change the situation.

    I checked the t-con board. It is getting good power. Then I removed one ribbon cable to see if I could isolate...
    10-29-2023, 06:36 AM
  • htv239
    LG UH8500 Backlight Troubleshooting Help
    by htv239
    Hello,

    I am currently troubleshooting an LG 60UH8500 TV (2016 TV). Any help or suggestions would be appreciated.

    Overall Issue: When TV is turned on, backlights all come on for about 10 seconds, then all go out. There is sound and there is a picture on the display (obviously hard to see without backlights, but it is there).

    What I Have Done So Far: 1) Removed the back TV cover to expose the boards (Power Supply, Tcon, and Main), 2) blew out any dust and cleaned all connections, 3) Noticed that the LED backlights are fed from two separate connectors...
    10-11-2021, 01:53 PM
  • Francesc V.
    Christmas lights - Something I am doing wrong
    by Francesc V.
    Hi:

    i am trying to repair this Christmas lights from my parents. They are incandescent lights, no led lights.

    I have tried with 12V a 24V small lights that I found in Aliexpress but is obvious that are not the right ones. They last microseconds connected. Do they blow because of Amps or Volts?

    If I measure the Amps in the string........it's only 90mA. If I measure the Volts in the "green box"......it's between 0 and 190V, but doing a little bit of maths from the number of bulbs in series.......it's only about 6V per lamp.

    Could...
    03-11-2023, 07:38 AM
  • jesterace
    Samsung UE49MU6400 acts dead until disconnecting backlights, then works.
    by jesterace
    Hi everyone I have this TV which was dead one day when I tried to turn it on. I've had the cover off and there was just a pulsating/electrical clicking/ticking noise from the PSU. I disconnected the mainboard as sometimes this works to just fire it up with backlights on? That didn't help. Same noise. Then I disconnected the backlight cable from the PSU and the TV came alive. It appeared to respond to the remote and i'm pretty sure it's fully operational when there is no backlight connected.

    However, I am in a dilemma.

    I tested the backlight outputs with the lights disconnected...
    10-20-2024, 10:15 AM
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