Brand: LG
Model Number: Dlex2501w
Main Symptom: No Heat
Heat suddenly went out. Still tumbles, still blows. Replaced thermal fuse (6931EL3003D) and had heat for two loads and now no heat again. No error codes. Vent and vent hose have been blown out.
This sounds like a typical airflow issue. The vent is either damage, collapsed or plugged.
Take the vent loose and pull the dryer away from the wall. With a good thermal fuse in place run a load or two, this will determine if the vent is the issue. Also you may need to clean out the internal vent back to and including the blower and housing.
https://www.appliancepartspros.com/repair-help/dryer-repair-help