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Samsung LE40B650T2W White Screen Issue: BN41-01167B Motherboard, T370HW02 VE T-con - Advice Needed

doomelek-22 4722 6
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 16719648
    doomelek-22
    Level 11  
    Good day. I have a problem with Samsung LE40B650T2W - motherboard BN41-01167B (MP1.1), T-con T370HW02 VE.
    After turning on the TV set generates a "welcome" melody, the screen is gray (no logo), then turns white. There is sound with the TV set-top box connected, and some detail of the picture can be noticed on the screen with a big problem.
    The fuse on the T-con board is working, there is 12V on it. By detaching the tapes from the matrix, half of the screen is black and half of the screen is white (unfastening once and another).
    On the T-con board, some elements reach the temperature of 40-50 ° C.
    I was browsing the forums as well as googling them and it seems to me that the T-con is broken.
    I am asking for advice on this topic.
    Regards, Klaudiusz Duliński.
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  • #2 16719726
    h jaworski
    Home appliances specialist
    What the other tensions look like on the T-con. One 12v is not enough to say anything about the module.
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  • #3 16719852
    doomelek-22
    Level 11  
    Hello, I am giving the measured voltages:
    VGHC 29.7V
    VGH 31.1V
    VGL -6V
    PANEL 12.37V
    YV1C 2.78V
    HAVDD 7.46V
    V3D3 3.3V
    V1D2 1.2V
    RST 3.15V
    XIN_M 1.64V
    XOUT_M 1.44V
    AVDD 16.1V
    EDID_WP 3.3V
    VGMA_REF 15.65V
    REF_F1 15.55V
    REF_F22 0.42V
    TV on, all tapes connected.
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  • Helpful post
    #4 16719988
    lisek
    Service technician RTV
    Read on Link
    - apparently there is SM for this model, I haven't seen it (looking at the photo> there are differences)

    If you can see anything? (the author wrote) + "white screen" then you have it there the famous AS-15F
    - measurements on it (other reference voltages: VGAMA1, VGAMA2, etc.?) or replacement!

    - read about him on the forum
    Samsung LE40B650T2W White Screen Issue: BN41-01167B Motherboard, T370HW02 VE T-con - Advice Needed
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  • #5 16720311
    doomelek-22
    Level 11  
    Measurements on the AS-15: 16.08 volts on all VDDs

    VG 1,2,4,6,8,10,11 is approx. 6.50V
    VG 12 1.21V
    VG 13,15,17,19,21,22 is 1.40V

    REF 2,4,6,8,10 is about 6.50V

    REF 13 1.23V
    REF 15 1.28V
    REF 17 1.36V
    REF 19 1.37V
    REF 21 1.40V
  • #6 16720498
    GanCegall
    Level 38  
    doomelek-22 wrote:
    On the T-con board, some elements reach the temperature of 40-50 ° C.

    Can you write which ones?
    doomelek-22 wrote:
    I was browsing the topics on the Honorable Forum

    And you're still measuring something there? Maybe you had to read, not just browse? :-)
  • #7 16726065
    doomelek-22
    Level 11  
    Hello. I replaced the AS-15 and the TV works. Thank you "fox" for the diagnosis of the fault.
    Best regards.

Topic summary

The discussion revolves around a Samsung LE40B650T2W television experiencing a white screen issue after startup, despite sound being present. The user, Klaudiusz Duliński, details the symptoms, including a gray screen followed by a white display, and notes that the T-con board shows some operational voltages. Various users provide insights into measuring additional voltages on the T-con board and suggest that the AS-15F component may be faulty. After replacing the AS-15, the television was restored to working condition, confirming the diagnosis of the fault.
Summary generated by the language model.
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