Dryer not heating
The drum turns, but the clothes stay cold or damp.
Find the closest dryer symptom and open the guide that matches what is happening before you replace parts.

Start with the symptom you can see. If two guides seem close, choose the one that matches what changed first.
LG dryer making a thumping noise? Run it empty, then try a few damp towels. If the same beat stays empty, check the drum lip, rollers, and belt path.
Replace a worn dryer drum felt seal without twisting or stretching it. Find the damaged edge, remove old glue, fit the new seal, and test the drum.