Most emergency calls here start the same way regardless of what's actually wrong: we disconnect the opener from the door manually so nothing drives against a jam, then check the spring, cables, and rollers before we touch the opener electronics at all. On a 2000s-era steel sectional door, that usually means confirming the torsion spring's intact and properly wound, the cables are seated on the drums, and the track's square - most of what we're ruling out, not fixing, on a given call. If the spring's gone, we replace it to match the door's weight and cycle rating rather than grabbing whatever's closest in size, because an undersized spring just means a faster repeat failure. If it's a sensor or opener issue, we re-align or replace the part first before recommending a whole new opener - a full swap is sometimes the right call, but it's not the first move. We test the door through a dozen or so full cycles before we call the job done, not just one.