Funai ZV427FX4 DVD/VCR Combo, VCR wont play or only plays for a few seconds repair

Picked one by one from a mixed channel. Transcript check: both title readers certain; 5 of 5 sampled certain picks confirmed by transcript, none failed. Channel rule: Include only videos that diagnose, repair, service, recap or restore specific electronic equipment (TVs, stereo receivers, CD/VCR/cassette decks, subwoofers, game consoles, appliances) or show a repair technique. Exclude personal updates, health vlogs, local event footage (fires, spillways, earthquakes), show-off clips and family projects.