Samsung UE43NU7092U 24C512 EEPROM Dump: File Structure, Programming, and Board Compatibility

User question

ue43nu7092u file 24C512

Artificial Intelligence Response

Direct answer to the question

• “24C512 file” = binary dump of the 512-kbit I²C EEPROM (24C512) fitted to the main board of the Samsung UE43NU7092U (NU7090 / KANT-SU chassis).
• Purpose: keeps panel ID, EDID, factory/service-menu data, MAC/HDCP keys and other board-specific parameters.
• Where to obtain: not released by Samsung; verified dumps are shared privately on specialist sites – the only publicly indexed link at present is ciklon.org (requires free registration, file set covers 24C512 + 25Q40 + 25Q80).
• Programming: read/backup first, then write with a universal programmer (RT809H, TL866II+, CH341A) either in-circuit via SOIC-8 clip or after desoldering.

Key points: – Use a dump that matches main-board P/N (e.g. BN41-02635B or VN43UH130) and panel CY-NN043HGNVx.
– Preserve your TV’s unique data (MAC, serial, HDCP) by merging it into the donor file when possible.
– Wrong or corrupted content can leave TV dead or with wrong colours/panel timing.

Detailed problem analysis

1. Hardware layout
   • 24C512 (64 kB) – I²C, 8-pin SOIC; usually refdes IC9xx near tuner or CPU.
   • 25Q40 / 25Q80 – 4 Mbit & 8 Mbit SPI NOR, hold bootloader and emergency software.
   • eMMC (KLM4G1F/8G1F…) – 4 GB/8 GB BGA, full Tizen OS and apps.
   Boot sequence: CPU samples 24C512 → decides panel/power domains → reads NOR → mounts eMMC. A corrupt 24C512 stops the chain (boot-loop, 5 V only, backlight flashes etc.).

2. Typical failure modes
   • Brown-out during firmware update → random bytes in 24C512.
   • Static discharge or I²C line short → checksum error, panel mismatch.
   • Previous “universal board” repair with wrong dump.

3. File structure (most dumps 64 kB):
   0x0000–0x01FF: EDID clone of panel (128 B x2).
   0x0200–0x03FF: HDMI port EDID extensions.
   0x0400–0x07FF: Factory blocks (panel code, T-con voltages, white-balance matrix).
   0x0800–0x0BFF: Region/tuner data.
   0x0C00–0x0FFF: HDCP seeds.
   0x1000–end: User NVM mirror, CRCs, spare.
   Samsung adds two 16-bit CRCs near end; service menu shows “EEP CRC: OK/FAIL”.

4. Compatibility matrix
   • Board revision (BN94-xxxx vs BN94-xxxxA) • Screen size (43″ vs 50″) • Power board variant (110 V vs 220 V).
   Mismatching any of these causes: no backlight, inverted colours, vertical stripes, or endless reboot.

Current information and trends

• Community sites continuously exchange dumps; ciklon.org and elektrotanya remain the most up-to-date for Samsung Smart TVs.
• Newer Samsung 2020+ models replaced 24C512 with 24C1024 or embedded NVM in PMIC, making board swaps harder.
• Programmers: the inexpensive CH341A now ships with voltage-selectable versions (1.8 V adapter not required for 24C series).
• Repair trend: reballing eMMC and writing full image via ISP as many faults turn out to be eMMC degradation rather than the small EEPROM.

Supporting explanations and details

Example workflow (RT809H, in-circuit):

1. TV unplugged, mainboard on bench.
2. Clip to 24C512 (Pin-1 ↘ mark).
3. Read → save “UE43NU7092U_orig.bin”. Verify CRC; if read unstable, desolder.
4. Compare to healthy dump in HxD; copy MAC/serial block (search for “SM-”).
5. Erase → program → verify.
6. Power-up TV; first boot 30-60 s, access service menu (Vol-, Vol+, Mute, Power) → Option > Panel Code correct? If no, set, then “Factory Reset”.

Analogy: Think of 24C512 as the BIOS/CMOS of a PC, while 25Q40 is the UEFI SPI flash and eMMC is the SSD with OS.

Ethical and legal aspects

• Firmware and key blobs are copyrighted by Samsung; distributing dumps publicly may violate license agreements.
• HDCP keys are device-unique; cloning them from another unit can infringe DRM regulations.
• Always keep customer’s personal data private when sharing dumps (e.g., Wi-Fi MAC linked to home router logs).
• EU Right-to-Repair proposals encourage sharing of repair data but are not yet legally forcing TV makers to release EEPROM contents.

Practical guidelines

• Always start with PSU voltage check; many “boot faults” are 13 V rail sag, not EEPROM.
• Use ESD protection; 24C series tolerates max ±4 kV HBM.
• Preferred programmer settings: I²C speed ≤100 kHz in-circuit to avoid bus conflicts.
• If clip method fails, hot-air at 260 °C, airflow 30 L/min, preheat board to 120 °C, lift chip cleanly.
• Keep three backups: raw, edited, and final programmed. Version-control by naming scheme (date_boardrev_panel.bin).

Potential challenges & fixes
– “Verify error at 0x0000”: supply to chip still connected to TV rails; isolate VCC by lifting Pin-8.
– “Backlight on, no image”: 24C512 ok but 25Q40 status reg has QE=0; re-flash NOR.
– “No Wi-Fi/Bluetooth”: lost MAC; patch bytes starting at 0x0D40.

Possible disclaimers or additional notes

• A correct dump does not repair SoC or eMMC failures; if TV still reboots after EEPROM fix, next step is eMMC health check (CMD1 responsive, EXT_CSD rev).
• Board variants manufactured for the Russian market (code suffix XZH) embed regional DVB tables—use matching dump.
• Some dumps circulating online are truncated (32 kB) – will boot but service menu shows CRC error.

Suggestions for further research

• Investigate whether Samsung’s “Power Reset 8-pin jig” (UART) can patch 24C512 via software, eliminating desoldering.
• Behaviour of Secure Boot fuses in KANT-SU SoC when EDID block altered.
• Correlation between EEPROM CRC failures and PSU ripple – statistical study for preventive maintenance.
• Explore open-source projects (e.g., OpenTizen) for direct generation of valid EEPROM images.

Brief summary

The 24C512 file for the Samsung UE43NU7092U is a 64 kB EEPROM dump that contains unique configuration, panel and security data required for boot. To repair a set exhibiting start-up problems, back up the original chip, obtain a model-matching verified dump (e.g., from ciklon.org), merge unique identifiers, then program the chip with a universal programmer. Observe legal considerations, verify board compatibility, and remember that EEPROM re-write is only one element of a full-stack TV repair procedure.

Disclaimer: The responses provided by artificial intelligence (language model) may be inaccurate and misleading. Elektroda is not responsible for the accuracy, reliability, or completeness of the presented information. All responses should be verified by the user.