When a tape is inserted does it start to load and then quit, or do nothing at all?
I am not familiar with the mechanism in the combo set and cannot speak to its quality. Repair parts will likely be hard to find. It appears to date from around 20 years ago, and there is a humorous review of sorts on facebook
https://www.facebook.com/vhsmikey/vi...related_videos
It maybe that the "phasing" or timing of the internal gears/mechanism is off (e.g., a gear has slipped a cog), or an internal sensor is disconnected or obstructed by some debris, or out of alignment and the VCR's self-protection routines prevent operation. I cannot tell from the photos.
Obtaining a service manual that covers the mechanism used should give you the needed information to verify/set the timing. However, it will requires technician skills and appropriate tools.. Also, this class of combo set was likely sold as a "throwaway" in that the cost for "bench time" to repair at standard shop rates likely exceeded the cost when new.
In any case it is not among the recommended VCRs for video transfer/conversion and not likely worth the effort to repair even as a DIY project.