Board PCB-027 board

PCB‑027 is an A/D conversion board used in Doran Scales industrial weighing systems. Common failures include degraded op‑amps or ADCs from thermal cycling, cracked solder joints on the power and signal traces, and failure of the 5 V regulator due to overheating or capacitor decay. Begin by verifying the input supply voltage and checking for any visible burn marks or loose connections; then use a multimeter to test continuity across the regulator pins and measure output at the ADC reference point. Finally, inspect the board for component discoloration and perform an I²C/SPI communication check with the host controller to confirm data integrity.[oss-gpt-20b]

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