By all means repair rather than buy new. If the motor runs it's definitely just something stuck in a valve or a leak in the diaphragm.
Not a bad idea to have a repair kit on hand. Not terribly expensive and consider a replacement check valve as well.
"A wise man can change his mind. A fool never will."
"Sometimes you're the dog, sometimes you're the tree"
2018 Flagstaff Micro Lite 25BDS
2004 Nissan Titan