The 8097 Mini D/C Stepper Board is a compact industrial controller designed for DC motors and stepper drives, typically used in laboratory or small‑scale automation systems. Common failure modes for this class of boards include burnt or tripped MOSFETs/IGBTs from overcurrent, degraded driver ICs due to thermal cycling, and capacitor leakage leading to voltage ripple on the supply rails; mechanical damage such as cracked traces can also cause intermittent operation. First‑check diagnostics: verify the input supply voltage and ripple with a multimeter/oscilloscope, inspect all power MOSFETs and driver ICs for discoloration or burn marks, and check for any loose or broken solder joints on the motor output terminals before proceeding to component replacement.[oss-gpt-20b]