For most CV628H boards, the service menu can be accessed by pressing Menu + 1147 on the remote.
If your TV is stuck on the logo, copy the extracted .bin or .img file to a FAT32-formatted USB drive and insert it into the TV's USB port. Download CV628H B42 1366x768 SamsungIR part1 rar
Some communities suggest using Telegram to find specific board files. The Dip Electronics Lab site provides a table that directs users to search for the board number within their Telegram community . Installation Notes Verify Board Number: Ensure your board exactly matches CV628H-B42 to avoid bricking the device. For most CV628H boards, the service menu can