Got a g&p sr15 that's dead. I think it needs a new switch/trigger contacts as it was firing intermittently on trigger pulls before it died. Also needs some battery Dean's connectors adding.
Check the motor connectors, they sometimes come off. Then pull the motor out and connect the spade fittings again and pull the trigger, if you have a spare motor do the same thing as a quick test of the motor and trigger shuttle. May save pulling the gearbox if it’s a dead motor,