FAQ
TL;DR: 80 % of BN41-01604C boards that reboot every 30 s show a failed SDIN5D2-2G eMMC + SDP1001 pair [Elektroda, lisek, post #17454556]; “Chip SDIN5D2-2G is not very efficient when soldering” [Elektroda, lisek, post #17451029] Why it matters: replacing or reflashing this 2 GB eMMC often revives Samsung D-series TVs.
Quick Facts
• SDIN5D2-2G capacity: 1.86 GB user + 1 MB boot × 2 [Elektroda, danao, post #17452742]
• Estimated 80 % failure rate in 30 s-reboot cases [Elektroda, lisek, post #17454556]
• SDP1001 processor price: USD 15-17 CN sellers [Elektroda, lisek, post #17454556]
• Pre-flashed eMMC modules sold ~USD 25 [Elektroda, lisek, post #17457853]
• Drop-in eMMC alternatives: KLM2G1HE3F-B001 or KLM4G1HE3F-B001 (spec 4.41) [Elektroda, lisek, post #17451029]
1. Why does my UE40D6000 reboot after 30 seconds?
The mainboard BN41-01604C loses communication with the corrupt SDIN5D2-2G eMMC or the paired OneNAND, so the watchdog forces a restart. Logs show CRC or timeout errors at user-area reads [Elektroda, danao, post #17452742] An 80 % correlation between this symptom and eMMC+SDP1001 failure was reported [Elektroda, lisek, post #17454556]
2. Which chips fail most often on BN41-01604C?
Technicians cite three hotspots: 1) SDIN5D2-2G eMMC (thermal and solder stress), 2) SDP1001/1002 SoC, and 3) HDMI switch SiI9489 when 3.3 V shorts occur [Elektroda, lisek, post #17452212]
3. Can I swap the SDIN5D2-2G with a larger or newer eMMC?
Yes, any JEDEC v4.41 part such as KLM2G1HE3F-B001 (2 GB) or KLM4G1HE3F-B001 (4 GB) works once flashed with the proper dump [Elektroda, lisek, post #17451029] Higher-spec v5.x chips may boot but risk incompatibility with the legacy SDP1001 controller.
4. Where can I get a working dump for SDIN5D2-2G?
Forum users shared links: kenotrontv.ru file ID 5265, SamyGO thread 7603, and Google-Drive archives for firmware 1018.1 [Elektroda, lisek, #17451029; #17930515]. Vendors on OLX list pre-programmed chips for USD 25 [Elektroda, lisek, post #17457853]
5. How do I read or write the eMMC safely?
Lower VCCQ to 1.8 V to avoid RT809H time-outs [Elektroda, GanCegall, post #17452875] Use an external PSU set to 3.3 V / 0.25 A. Clip CLK,CMD,D0,D1,GND,VCC,VCCQ,RST to the test pads (see pinout image posts #17455393).
6. RT809H vs Easy-NAND Tiny Tools—what’s the difference?
RT809H writes eMMC “as-is”; it cannot remap user data away from bad blocks. ENTT rebuilds the image to spare blocks, so it succeeds when RT809H fails [Elektroda, artur0089, post #20770735]
7. How do I enter Service Menu to confirm firmware version?
With TV in standby press: Info ▶ Menu ▶ Mute ▶ Power. The top line shows DEUC firmware (e.g., 1014.0) [Elektroda, lisek, post #17452212]
8. What does the front LED double-flash error mean?
Two short blinks repeated indicate a 3.3 V line short, often caused by SiI9489 or WT61P805 regulator failure [Elektroda, lisek, #17452212; #20604414].
9. Is repairing cheaper than replacing the mainboard?
Parts cost about USD 15-17 (SDP1001) + USD 25 (eMMC) + rework labor. Used boards once sold for EUR 45-47 but now list near EUR 150 [Elektroda, lisek, #17454556; #17454627]. Calculate before ordering.
10. What extra step prevents eMMC death during soldering?
Limit top-heater temperature to 240 °C and preheat the board. Rapid cooling cracks wire-bonds; technicians report in-solder failures even on new chips [Elektroda, lisek, post #17455045] “They die to power when hatching,” a member warned [Elektroda, GanCegall, post #17456466]
11. How do I clone a good eMMC onto another chip?
- Read EXT_CSD, BOOT1, BOOT2, and USER partitions from the working board (≈1.8 GB; 3 MB/s typical). 2. Erase target eMMC then write BOOT1/2 first. 3. Write USER area in 256 kB blocks, verifying CRC every 1 MB. Full copy takes 20 min [Elektroda, danao, post #17452742]
12. What’s the service-life statistic for SDIN5D2-2G?
Field data show many chips failing after 5–6 years of TV use [Elektroda, mailo, post #17456836], aligning with JEDEC’s 3,000 PE cycle rating for 2 GB 42 nm SLC eMMC [SanDisk datasheet].
13. LED blinks but backlight stays dark—fault cause?
If the set shows only backlight then restarts, the eMMC boots but kernel or panel firmware is unreadable; replacing or re-flashing eMMC usually restores image [Elektroda, danao, post #17452941]
14. How to ISP-connect BN41-01604C eMMC?
Short How-To:
- Locate test pads TP_CLK, TP_CMD, TP_D0-D3, VCC, VCCQ, GND near IC1301.
- Solder 30 AWG wires; keep length <10 cm.
- Feed 1.8 V-VCCQ and 3.3 V-VCC from lab PSU, then attach programmer.
15. Edge case: NAND reads as eMMC—why?
Some tools mis-detect OneNAND KFG1GN6W2D as eMMC when data lines float; results show SEM02G ID even on NAND chips [Elektroda, GanCegall, post #17928106] Confirm by checking BOOT partition size; OneNAND lacks BOOT1/2.
repair finished replacing eMMC and SDP1002 (by the way damaged _ replaced) oneNanad
