A torsion spring under tension can break a wrist or worse - this isn't a job for a Saturday with a socket set, and we say that whether or not you call us. Where DIY makes sense: lubricating rollers and hinges, tightening visible bolts, checking the photo-eye sensors for dust or misalignment, clearing the track of debris. Where it doesn't: springs, cables, or anything involving the torsion bar. On a 1997-era door, the spring and the drum it's wound on are often original, and the wind tension on a 16x7 double door spring is enough to put someone in the hospital if the winding bars slip. If your opener is just not responding, check the wall switch and the breaker before calling anyone - half the no-response calls we get turn out to be that simple.