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Samsung UE40ES6900UXXU - the standby diode flashes 5 times, on / off and so on r

stasimon1981 7212 14
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  • #1 16887926
    stasimon1981
    Level 10  
    Hello

    Fault like the title, the TV after turning on the standby LED blinks 5 times, then two snaps are heard and the TV turns off and on and again the LED blinks all the time.
    I unscrewed the TV, the capacitors on the power board do not look spilled or swollen. After disconnecting the motherboard, the matrix backlight turns on. I measured the voltages on the power board (A5V, B5V, B13V and Vamp) and are as in the table on the power board. I think the power board is ok?
    Did the motherboard fall?
    My CD has these markings:
    Model: High_X10 Plus_LED
    Code: BN41-01807A
    Model: BN41-01807
    Additionally, on the barcode sticker there is a model besides the model: BN94-05857Z - I think I should look for such a motherboard, but it is nowhere to be found. Can you use any other from the same tv series or from the same model but with a screen e.g. 32 'or 46'?
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    #2 16888362
    baki
    Level 20  
    Hello.
    Disconnect the lvds cable going to the T-con from the main board and turn on the tv, or it will behave like that. If so, the main board is damaged. You can insert from a smaller or larger one but in the service mode in option option you have to choose the right panel.
    Near the connector of the cable going to the power supply (on the main board) is such a miniature fuse maybe damaged. Check it out !! There is also such a symptom. The memories are simply not powered and the system does not boot.
    Pozdr.
  • #3 16893392
    stasimon1981
    Level 10  
    I disconnected the T-Con and unfortunately it is still the same. I also checked this fuse and it looks like it's ok. In a word the main board fell. Is there any point in having it repaired? I can't find the same disc anywhere, even from a larger size.

    Does anyone know if my TV will fit a disc from some other model?

    PZD.
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  • #4 16893458
    Indyczes
    Level 33  
    And why replace the disc right away, you can't fix it? Although some basic measurements, as I know life probably will be a problem with NAND.
  • #5 16894207
    stasimon1981
    Level 10  
    Where can I find what motherboards will fit my TV? In appearance, the boards from the UE40ES6560 models and the UE40ES6800 are the same

    Unfortunately, my knowledge is not enough to repair the motherboard myself :( I measured the voltage on the power board but the motherboard is too much for me.

    PZD.

    My board is BN94-05857Z from UE40ES6900UXXU, I found the main board BN94-05857B from UE40ES6540U, it looks identical to mine. Can it be a replacement for my CD? I can't find anywhere what information I can use if I don't find the same as mine.
  • #6 16896286
    elmo071
    Level 30  
    Indyczes wrote:
    as I know life there will probably be a problem with NAND.

    As far as I know, there is no EMMC on the NAND disc

    The board you give should match as it has the same connector to the strip that connects the motherboard to the logic. From what I see, you have a metal socket where you insert the tape.
  • #7 16896572
    Indyczes
    Level 33  
    A colleague of Mailo successfully embraces the EMMC memory for this CD, he recently sent me a programmed one and after soldering the tv he started without problems, it's always cheaper than buying main and of unknown origin.
  • #8 16899045
    stasimon1981
    Level 10  
    Is there somewhere on the net to find a compatible list that I could use for my TV? You can buy several CDs that look identical to mine and are from different TVs.
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    #9 16899876
    baki
    Level 20  
    Hello.
    Your CD has no replacement because your TV only used two panels
    LTJ400HV09-V and LTJ400HV09-N. You can insert any disc between 6500-6900.
    The panel model will definitely have to be changed. Check if this option to change from a normal remote control is available. TV on standby and quickly press in turn:
    Info - menu - mute - power ON Tv should turn on in the service mode. At the very top in Opion there is a panel type, as this option is highlighted, you can change something with your remote control, if not only the option with the service remote control (on the service).
    It may also be that you hit the disc with the same panel or similar and the picture will be ok but there may be a problem with 3D.

    Pozdr.
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  • #11 16900177
    stasimon1981
    Level 10  
    I do not care about 3D on this TV, I started maybe once or twice out of curiosity (3D alone is not bad but not on such a small screen) I will buy some CD from models mentioned by colleague @baki and see what will happen after its installation.
  • #12 16935457
    stasimon1981
    Level 10  
    baki wrote:
    Hello.
    Your CD has no replacement because your TV only used two panels
    LTJ400HV09-V and LTJ400HV09-N. You can insert any disc between 6500-6900.
    The panel model will definitely have to be changed. Check if this option to change from a normal remote control is available. TV on standby and quickly press in turn:
    Info - menu - mute - power ON Tv should turn on in the service mode. At the very top in Opion there is a panel type, as this option is highlighted, you can change something with your remote control, if not only the option with the service remote control (on the service).
    It may also be that you hit the disc with the same panel or similar and the picture will be ok but there may be a problem with 3D.

    Pozdr.


    Finally, I bought the motherboard for this TV, as I did not get the perfect one for my model, the choice fell on the UE55ES6800UXXU. Board mounted, TV starts (HDMI cables / antennas not yet connected) I can enter the service menu and change the type of matrix. The problem is that I don't know what type of matrix I should set there. My matrix has the designation LTJ400HV09-B and in the service menu I see something like e.g. 55A1AF6E or 40R1AF6E, etc.

    PZD.
  • #14 16935838
    stasimon1981
    Level 10  
    There are a lot to choose from, I only wrote 2 examples (next to 40R1AF6E you can also choose 40A1AF6E) Is there a list of matrices assigned to a given TV model somewhere? I don't know what the choice of matrix is and how to adjust the choice in the service menu to the information on the sticker on the matrix.

    PZD.
  • #15 16935883
    baki
    Level 20  
    Hello.
    There are only two matrices for your tv model and I gave them above for the old disc
    bn94-05857z
    The right panel for your panel is 40A1AF6E and this should be entered

    Pozdr.
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Topic summary

✨ The discussion revolves around a Samsung UE40ES6900UXXU television exhibiting a fault where the standby LED blinks five times, followed by the TV turning off and on repeatedly. The user has checked the power board capacitors and measured voltages, suspecting a motherboard failure. Suggestions include disconnecting the T-Con cable to diagnose the main board and checking for a damaged fuse. The user inquires about compatible motherboards, considering alternatives from similar models. They eventually purchase a motherboard from a UE55ES6800UXXU, successfully install it, and seek guidance on setting the correct matrix type in the service menu, identifying their matrix as LTJ400HV09-B. The conversation highlights the importance of matching components and the potential for repairs versus replacements.
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FAQ

TL;DR: Samsung UE40ES6900 main-board faults are common; this model shipped with 2 panel variants and “You can insert any disc between 6500–6900.” [Elektroda, baki, post #16899876]

Why it matters: This FAQ helps DIY repairers quickly confirm a bad main board and pick a working replacement with the correct panel code.

Quick Facts

How do I diagnose the 5‑blink boot loop on a UE40ES6900?

Disconnect the LVDS between main board and T‑Con and power on. If it still cycles, the main board is bad. Also check the tiny fuse near the PSU connector on the main board; if open, the memories lose power and the set won’t boot. “Disconnect the lvds cable… If so, the main board is damaged.” [Elektroda, baki, post #16888362]

How can I confirm it’s not the power supply?

If the backlight turns on with the main board unplugged, the PSU and LED driver rails are likely fine. Measured A5V, B5V, B13V, and Vamp matching the PSU label also supports a healthy PSU. Persistent cycling with LVDS removed points back to the main board. [Elektroda, stasimon1981, post #16887926]

Which replacement main boards are compatible?

Use a donor main board from the ES6500–ES6900 series. After installation, enter Service Menu and set the Panel Type to match your LCD. This cross‑series swap works when the panel type is correctly configured. “You can insert any disc between 6500–6900.” [Elektroda, baki, post #16899876]

Can I use a board from a different screen size, like 55"?

Yes. A UE55ES6800 main board booted a UE40ES6900 once the Panel Type was changed in Service Menu. You must match the panel code for correct image and features. Connect HDMI/antenna after confirming on‑screen operation. [Elektroda, stasimon1981, post #16935457]

What Panel Type should I set for LTJ400HV09‑B?

Set Panel Type to 40A1AF6E. This mapping produced correct operation in the thread. If multiple 40‑inch options appear, choose 40A1AF6E for the LTJ400HV09‑B sticker. [Elektroda, baki, post #16935883]

How do I enter Samsung Service Menu and change Panel Type?

With TV in standby: 1) Press Info, 2) Menu, 3) Mute, 4) Power. Navigate to Option → Panel Type and select the correct code. Some sets need a service remote to enable changes. Exit and power cycle to save. [Elektroda, baki, post #16899876]

What panels did the UE40ES6900 originally ship with?

Two 40-inch panels are listed: LTJ400HV09‑V and LTJ400HV09‑N. When using donor boards, you may need to change Panel Type accordingly. Using the wrong type can affect features like 3D. [Elektroda, baki, post #16899876]

What are LVDS and T‑Con in this context?

LVDS is the high‑speed link from the main board to the T‑Con (timing controller), which drives the LCD panel. Pulling the LVDS checks whether the main board is causing the boot loop; if the loop continues, the main board is suspect. [Elektroda, baki, post #16888362]

Is repairing the original main board worth it?

Yes. A common failure is boot media (eMMC) corruption. Replacing or reprogramming the eMMC with a known image restored normal start after soldering on this chassis. “After soldering the TV started without problems.” [Elektroda, Indyczes, post #16896572]

How do I tell if a donor board’s panel connector will fit?

Check the panel ribbon connector style. For this chassis, a metal tape‑in socket on the donor board matches the logic ribbon used by the LTJ400 series. Match connector type before buying. [Elektroda, elmo071, post #16896286]

Will 3D still work after a board swap?

Picture typically works once Panel Type matches, but 3D may fail if the donor board expects a different 3D configuration. If 3D matters, choose a donor with the same 3D profile. [Elektroda, baki, post #16899876]

What does the small fuse near the PSU connector do?

That miniature fuse feeds the memories on the main board. If it opens, the system firmware cannot power up and the TV will cycle. Check and replace only with the same rating. [Elektroda, baki, post #16888362]

Is there an official compatibility list for these boards?

No universal list exists. Use ES6500–ES6900 donor boards, verify the panel ribbon connector, and set Panel Type in Service Menu. This method is repeatedly validated in the thread. [Elektroda, elmo071, post #16896286]

Which panel code is better: 40R1AF6E or 40A1AF6E?

For LTJ400HV09‑B, use 40A1AF6E. 40R1AF6E appears in menus but does not match the LTJ400HV09‑B mapping provided by contributors. Choose 40A1AF6E to avoid image issues. [Elektroda, baki, post #16935883]

What simple 3‑step check should I run before buying parts?

  1. Unplug LVDS and power on. 2. Inspect/measure the small fuse on the main board. 3. Confirm backlight and PSU rails operate with the main board disconnected. Replace or repair the main board if the loop persists. [Elektroda, baki, post #16888362]
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