SANSUI SLEDSC-32HD TV not booting, No stand-by led

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  • Neddsme
    Member
    • Sep 2021
    • 30
    • Malawi

    #1

    SANSUI SLEDSC-32HD TV not booting, No stand-by led

    I have a 32 inch Sansui android TV that stopped booting. i checked the motherboard for any power failures but it seemed OK to the best of my knowledge. The TV does not have a dedicated power supply board so i could not do any isolation but here is a list of all the things i think were relevant to test.
    if i missed anything you let me know;
    DDR (1.5V) = 1.484V
    VDDC = 1.000V
    VDDC_CPU = 1.151V
    VDD1V2_DM = 0.000V
    3V3_STB = 3.315V
    3V3_M = 3.307V
    1.8V_M = 1.803V
    ALL KEYS = 3.310V
    5V_STB = 5.142V
    5V = 5.140V
    RED = 1.313V
    GRN = 0.000V
    IR = 4.060V
    12V = 12.130V
    BCKLT = 0.000V
    VCC to LCD board = 0.000V


    so far this is what i was able to measure on test points and caps. The VCC to LCD was measured on the single cable that goes to the LCD flex board, on 3 Red wires that seemed to be the power wires.

    So far pressing the power switch, the 3.3v signal gets pulled-low normally, but nothing happens. there is no backlight, no turning on/off of stand-by light, no indication of anything happening. anything to do with the LCD or power-on sequence does not happen.

    There was some indication of some software update prompts months prior to the eventual state. but i havent tried any flashing/ software related things.

    this is my first encounter with a bricked android TV so any help would be much appreciated.
  • Neddsme
    Member
    • Sep 2021
    • 30
    • Malawi

    #2
    Re: SANSUI SLEDSC-32HD TV not booting, No stand-by led

    Originally posted by Neddsme
    I have a 32 inch Sansui android TV that stopped booting. i checked the motherboard for any power failures but it seemed OK to the best of my knowledge. The TV does not have a dedicated power supply board so i could not do any isolation but here is a list of all the things i think were relevant to test.
    if i missed anything you let me know;
    DDR (1.5V) = 1.484V
    VDDC = 1.000V
    VDDC_CPU = 1.151V
    VDD1V2_DM = 0.000V
    3V3_STB = 3.315V
    3V3_M = 3.307V
    1.8V_M = 1.803V
    ALL KEYS = 3.310V
    5V_STB = 5.142V
    5V = 5.140V
    RED = 1.313V
    GRN = 0.000V
    IR = 4.060V
    12V = 12.130V
    BCKLT = 0.000V
    VCC to LCD board = 0.000V


    so far this is what i was able to measure on test points and caps. The VCC to LCD was measured on the single cable that goes to the LCD flex board, on 3 Red wires that seemed to be the power wires.

    So far pressing the power switch, the 3.3v signal gets pulled-low normally, but nothing happens. there is no backlight, no turning on/off of stand-by light, no indication of anything happening. anything to do with the LCD or power-on sequence does not happen.

    There was some indication of some software update prompts months prior to the eventual state. but i havent tried any flashing/ software related things.

    this is my first encounter with a bricked android TV so any help would be much appreciated.
    update on the board, Turns out the board is identified as TP.MS338.PB802
    An android TV board with 4GB storage.
    Attached Files

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