A door installed around 2000 is old enough to need real repair work but young enough that full replacement usually isn't the first move. Torsion springs from this era are rated for a set number of cycles, and if yours came with the house, it's likely nearing or past that mark regardless of how it looks. We see a lot of springs that look fine right up until the morning they don't lift the door at all.
Openers from this build period are the other common failure point - not the motor itself, usually, but the circuit board, the safety sensors, or the drive gear. Parts for openers that age are a mixed bag: some brands still stock boards, others don't, and we won't pretend otherwise. When a board isn't available, opener replacement is the honest answer, not a workaround. We'll always tell you which situation you're in before we start charging for labor.