Samsung A136u Dead Boot Repair

If the hardware responds, booting into Recovery Mode (Power + Volume Up) allows for wiping the cache partition or performing a factory reset. For persistent firmware corruption, entering Download Mode (Volume Up + Volume Down while connecting to a PC) enables the use of the Samsung Odin tool to flash official stock firmware. Advanced Hardware Repair (JTAG and ISP)

A136U-specific firmware (match the Binary/Bit level). samsung a136u dead boot repair

Likely a motherboard short or dead PMIC (Power IC). If the hardware responds, booting into Recovery Mode