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Hi everyone,
I have a Beko B7S_G10_B06_T02 control board that was damaged after the door-lock triac burned out and damaged the ATmega64A MCU.
I bought a replacement ATmega64A from AliExpress and replaced the damaged MCU. I flashed it with the Beko B7S_G10_B06_H2 firmware. However, the control board still does not power up properly.
The 5 V supply is OK, and I have replaced the damaged components. I also flashed both the MCU and the EEPROM, and I checked/programmed the fuse bits.
Unfortunately, the board still does not start, and I don't know what could be wrong.
Could someone please help me troubleshoot this board? I would especially appreciate advice on the correct ATmega64A firmware, fuse-bit settings, EEPROM contents, and what signals or voltages I should check to determine whether the MCU is running.
Thank you!
this is my fuse bit from tnm5000
Lock Bit1: Disable
Lock Bit2: Disable
Boot Lock Bit01: Disable
Boot Lock Bit02: Disable
Boot Lock Bit11: Disable
Boot Lock Bit12: Disable
Clock Source (CKSEL3-0): External Crystal (CKSEL3-0=1110)
Start-up Time: SUT 1-0 =11
Brown-out Detection Fuse (BODEN): Enable
Brown-out Detection Level (BODLEVEL): Disable
BOOTRST: Disable
Boot Size Configuration(BOOTSZ1-0): 512 Words (BOOTSZ1-0=11)
EEPROM Erase Protection: Protected
CKOPT: Disable
JTAGEN: Disable
OCDEN: Disable
WDTON: Enable
ATmega103 compatibility mode: Disable
Oscillator Calibration Byte : ACh
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