I had a Rekord that was like that: the first stage pin in the trigger had dropped out. The trigger blades themselves aren't made of great material.
Yuo can see the pins in this animation:
https://youtu.be/_BlQRRciXMQ
The only way to check is to remove the trigger by knocking out the trigger pivot pin. If they have fallen out then it's a new blade to fix it.
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