Articles

• TV does not turn on: no standby light, step-by-step checks

  A safe, ordered way to diagnose a TV with no standby LED and no reaction: mains, fuse, bulk capacitor, standby rail, feedback loop.

• Typical faults by mainboard family: how to use the faults database

  How to read the FW Tool faults-by-mainboard database, what confirmed and single-source mean, and examples from the sample data.

• What to put on a repair warranty card

  Practical list of what a TV repair warranty card should contain: parties, device, work, parts, period, exclusions and signatures.

• How a TV USB firmware package is built

  What is inside a TV USB firmware file: container, scripts, partition images, compression and encryption, and how to take it apart safely.

• Comparing two eMMC/SPI dumps: hashes and differences

  How to verify a TV dump with CRC32/MD5 and a byte-by-byte comparison, and how to read the list of differing ranges.

• Choosing a replacement eMMC for a TV

  How to pick an eMMC substitute: capacity, package, version, manufacturer, and what to do after the swap.

• Reading a TV boot log over UART

  How to capture and read a TV boot log from the UART: stages, typical messages, garbage and silence, and how to save a log.

• LVDS panel settings: mapping, bit depth, ports

  LVDS settings explained: pairs, 6/8/10-bit, VESA and JEIDA mapping, ports A/B, and where they are set in the firmware.

• TV eMMC dump: how to read, verify and what to do next

  Working with a TV eMMC dump: connection, copy, hash check, partition analysis, what to avoid.

• SPI flash 25xx (SOIC8): pinout and programming mistakes

  Standard 25xx pinout, 3.3 V and 1.8 V chips, in-circuit and off-board reading.