FAQ
TL;DR: 5-blink fault on Kunft/Electronia 22-inch 17MB82S/17MB55 TVs points to SPI firmware; "It worked perfectly" after flashing U114/U115 [Elektroda, assistenciaelectro, #17646900; Elektroda, RicardoPT, #19518940]. Bin sets posted: U10/U12 and U114/U115 [Elektroda, billobirillo, #19518592; Elektroda, billobirillo, #19518915].
Why it matters: This FAQ helps bench techs quickly resolve boot/blink issues by choosing the right bin pair and flash method.
Quick-Facts
- Symptom: power LED flashes 5 times on start-up [Elektroda, assistenciaelectro, post #17646900]
- Confirmed fix: 1 success after programming U114/U115 on 17MB55 with AUO T215HVN01.0 [Elektroda, RicardoPT, #19518940; Elektroda, billobirillo, #19518915].
- Typical SPI NOR sizes used for TV boot flash: 32–64 Mbit (e.g., W25Q32/W25Q64) [Winbond, 2021].
- Bin pairs shared in thread: U10/U12 (17MB82S) and U114/U115 (17MB55) [Elektroda, billobirillo, #19518592; Elektroda, billobirillo, #19518915].
- USB recovery was queried; no outcome reported in-thread [Elektroda, querij, post #19523150]
Quick Facts
How do I fix 5 LED flashes on a Kunft 22LVM14 / Electronia 22" with panel T215HVN01.0?
Treat it as a firmware/boot issue and reprogram the SPI bins that match your board and panel. For 17MB82S, use the U10/U12 pair posted. For 17MB55, use U114/U115. Back up originals before writing [Elektroda, billobirillo, #19518592; Elektroda, billobirillo, #19518915; Elektroda, assistenciaelectro, #17646900].
Where can I get the working firmware (bin files) for 17MB55 + AUO T215HVN01.0?
Use the U114 and U115 bin files shared by billobirillo; a technician confirmed, “It worked perfectly” on 17MB55 with panel T215HVN01.0 [Elektroda, billobirillo, #19518915; Elektroda, RicardoPT, #19518940].
Are there bin files for 17MB82S with the same T215HVN01.0 panel?
Yes. The thread includes U10 and U12 bin files attributed to the 17MB82S context. Program both devices and verify after write [Elektroda, billobirillo, post #19518592]
Can I update the TV via USB instead of desoldering the SPI chips?
USB recovery was asked about, but no result was posted. USB updates require a functional bootloader and the exact model package; if boot fails early, USB won’t start [Elektroda, querij, #19523150; “CH341A programmer user guide”].
Which SPI chip should I order—25C32 or 25C64?
A member asked “25c64 or 25c32.” Read your chip’s top marking to match capacity. Typical TV boot flash sizes are 32–64 Mbit (W25Q32/W25Q64 class) [Elektroda, hassanelektro, #19050119; Winbond, 2021].
Do I need to program both chips in a pair (U10/U12 or U114/U115)?
Yes. The working 17MB55 fix used both U114 and U115. For 17MB82S, both U10 and U12 were posted together. Program and verify each chip [Elektroda, billobirillo, #19518915; Elektroda, billobirillo, #19518592].
Are 17MB55 and 17MB82S binaries interchangeable?
No. Use the bin pair for your exact board and panel. Cross‑flashing can brick the board. The confirmed success used 17MB55 U114/U115 only on a 17MB55 set [Elektroda, billobirillo, #19518915; Elektroda, RicardoPT, #19518940].
What’s a safe 3‑step method to reflash these Vestel boards?
- Read and save both original chips as backups. 2. Erase, program correct bins to each device, then verify. 3. Power up and test; if no boot, recheck chip order and verify writes [“CH341A programmer user guide”].
What tools work to program these SPI/NOR chips?
CH341A, TL866, or RT809H with SOP8 clip or hot‑air removal are common choices. Always verify after write. These support 25‑series SPI NOR devices (e.g., W25Q32/64) [“CH341A programmer user guide”; Winbond, 2021].
Does the panel T215HVN01.0 change which firmware I need?
Yes. Vestel firmware pairs are panel‑configured. The success case was 17MB55 + AUO T215HVN01.0 with the matching U114/U115 bins [Elektroda, RicardoPT, #19518940; Elektroda, billobirillo, #19518915].
My TV brand sticker is missing; how can I identify it?
Use the mainboard code and panel. One case had board 23223532 and AUO panel, suspected as Electronia LD22FHD. Cross‑check these against service data or archives [Elektroda, RicardoPT, #19519020; Elektroda, billobirillo, #19519049; Elektroda, RicardoPT, #19518969].
What’s the success rate reported here?
There is 1 confirmed success after flashing U114/U115 on 17MB55 with T215HVN01.0, and two bin pairs were posted overall (U10/U12, U114/U115) [Elektroda, RicardoPT, #19518940; Elektroda, billobirillo, #19518592; Elektroda, billobirillo, #19518915].
Where are U10/U12 or U114/U115 located on the board?
Match the silkscreen references on the PCB near the SoC. The thread identifies these designators; use the board print to locate them precisely [Elektroda, billobirillo, #19518592; Elektroda, billobirillo, #19518915].
What if flashing completes but the TV still blinks or shows no image?
Edge-case: wrong bin/panel config, swapped chips, or hardware faults. Reconfirm panel ID, bin order, and verify writes. If still failing, check power rails and hardware before retrying [Winbond, 2021; “CH341A programmer user guide”].
Can you share the exact TV model from the success case?
The brand was Electronia 22"; the exact model label was missing. A respondent suggested Electronia LD22FHD based on context [Elektroda, RicardoPT, #19518969; Elektroda, billobirillo, #19519049].
Any expert tip before I start?
Quote: “It worked perfectly,” but only after flashing the correct pair. Always back up originals and match board+panel first [Elektroda, RicardoPT, post #19518940]
