FAQ
TL;DR: On Vestel 17MB82-1A sets, 2 SPI flashes decide boot; "Dont rewrite 25q16. First rewrite 25q64." Use panel‑matched binaries to restore picture and control. [Elektroda, arizanotu, post #17899246]
Why it matters: For DIY techs fixing Techwood LED22AK13DVX/2 no‑boot or red‑LED‑blink faults, this prioritises actions and protects panel data.
- Platform: Techwood LED22AK13DVX/2 uses PSU 17IPS61-2, main 17MB82-1A, panel M215HGE-L21 Rev C2; symptom is red LED blink no‑start. [Elektroda, dahu74fr, post #17834587]
- Firmware location: Two serial flashes (EN25Q64, EN25QH16) store the TV software/config; reflashing can recover boot. [Elektroda, dahu74fr, post #17834587]
- USB recovery: Use FAT32, uncompressed software, hold OK on remote while powering; expect minutes of USB LED activity and auto‑restart; match product number 10083946. [Elektroda, gwozdz, post #17899211]
- Caution: 25Q16 often contains panel data; flash 25Q64 first to avoid mismatched display behavior. [Elektroda, arizanotu, post #17899246]
- Proven outcome: After flashing panel‑matched binaries, the set booted and displayed correctly. [Elektroda, dahu74fr, post #18039111]
Quick Facts
- Platform: Techwood LED22AK13DVX/2 uses PSU 17IPS61-2, main 17MB82-1A, and panel M215HGE-L21 Rev C2; red LED blink no‑start is typical. [Elektroda, dahu74fr, post #17834587]
- Firmware storage: Two SPI flashes (EN25Q64 and EN25QH16) hold loader, settings, and panel data; reflash can restore operation. [Elektroda, dahu74fr, post #17834587]
- USB update method: FAT32 drive, uncompressed software, hold OK on remote, then apply power; allow several minutes and auto‑restart; ensure product number 10083946 matches sticker. [Elektroda, gwozdz, post #17899211]
- Safety note: Program 25Q64 first; 25Q16 often carries panel configuration and overwriting it can break the image. [Elektroda, arizanotu, post #17899246]
- Verified fix: Panel‑matched binaries restored image when generic firmware didn’t. [Elektroda, dahu74fr, post #18039111]
How do I fix a Techwood LED22AK13DVX/2 that blinks red and won’t start?
Verify the power board 17IPS61-2 first. If it’s OK, focus on firmware. The TV software resides in EN25Q64 and EN25QH16 SPI flashes. Reflash with correct binaries or attempt a USB recovery, then test boot. [Elektroda, dahu74fr, post #17834587]
Where do I get correct .bin files for U10/U12 on a 17MB82-1A with M215HGE-L21 C2?
Use panel‑matched dumps. Ask for U10/U12 bin files that explicitly list mainboard 17MB82-1A and panel M215HGE-L21 C2. These matched binaries target both firmware and panel data. [Elektroda, billobirillo, post #18038626]
What is the proper USB recovery method for this Vestel chassis?
Use this sequence: 1. Power off (not standby). 2. Insert a FAT32 USB with uncompressed software, hold OK on remote. 3. Plug power and keep holding; wait minutes while the USB LED blinks until auto‑restart. "Product number (10083946) is the same as on mainboard sticker." [Elektroda, gwozdz, post #17899211]
The USB stick LED blinks rapidly, but nothing happens. What does it indicate?
The bootloader is not progressing enough to load the USB package. In this state, program the SPI flashes directly with a programmer and suitable bin files, then retry. [Elektroda, dahu74fr, post #17898977]
Which SPI chip should I flash first, 25Q64 or 25Q16?
Flash 25Q64 first. 25Q16 often stores panel data and settings, so keep it intact until the set boots. "Dont rewrite 25q16. First rewrite 25q64." [Elektroda, arizanotu, post #17899246]
After flashing 25Q64 only, nothing changed. What next?
Also program 25Q16 with a matching dump. Users reported the set booted only after flashing both chips, confirming both influence startup. [Elektroda, dahu74fr, post #18036246]
Backlight is on but there’s no image after flashing. How do I fix it?
You likely used firmware with the wrong panel configuration. Reflash with panel‑matched binaries for your exact panel to restore the picture. Success was reported after using the correct panel software. [Elektroda, dahu74fr, post #18039111]
What are U10 and U12 on the 17MB82-1A board?
They are board designators for the two SPI flash devices. Request or load U10/U12 bins that match your mainboard and panel combination for reliable recovery. [Elektroda, billobirillo, post #18038626]
How long should a USB firmware update take, and what should I expect?
Expect several minutes of USB LED activity. The TV should restart itself when done. Keep power stable and the remote’s OK button held during initiation. [Elektroda, gwozdz, post #17899211]
How do I make sure the USB firmware matches my set?
Match the product number on the package to your sticker. "Product number (10083946) is the same as on mainboard sticker." Mismatches can block updates or cause display issues. [Elektroda, gwozdz, post #17899211]
Can I flash the EEPROMs in‑circuit, or must I desolder them?
You can program them in‑circuit with a SPI programmer. Clip onto the chips carefully, write the bins, then test the set. [Elektroda, dahu74fr, post #17898977]
Power board 17IPS61-2 checks OK. What else should I investigate?
Shift focus to the mainboard software. The no‑start with red LED blink is often firmware‑related on the 17MB82-1A, stored in EN25Q64 and EN25QH16. [Elektroda, dahu74fr, post #17834587]
I tried vendor USB firmware, but the TV still won’t load it. Why?
The loader may be too corrupted to read the USB package. The pendrive LED blinking continuously indicates repeated failed attempts. Program the SPI flashes directly. [Elektroda, dahu74fr, post #17899939]
What’s the risk of flashing 25Q16 with the wrong file?
You may lose panel configuration, leading to backlight with no image or incorrect display behavior. Program 25Q64 first and use panel‑matched 25Q16 data. [Elektroda, arizanotu, post #17899246]
