This is a foldable portable solar panel used with power stations for camping, RVing, and emergency charging. Unlike batteries, panels tend to last longer, but portable designs face wear from folding hinges, cable strain, and physical abrasion.
Repair is worthwhile if the issue is a replaceable cable, connector, or junction box-common failure points that don't mean the panel itself is "dead." If the panel surface delaminates, develops widespread microcracks, or output drops sharply even in good sun (and you've ruled out cable/connector issues), replacement is usually the better choice because internal cell repairs aren't practical. Use the threshold especially strictly if the panel is exposed to rough handling; repeated setup/teardown increases wear.
A tipping factor is safety: damaged wiring or hot connectors can be a fire risk, so replacement is prudent if you see melted plugs, scorching, or intermittent output that suggests internal shorts.