As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3761 FROM ROCHESTER TO LGA, HAD TO RETURN TO FIELD DUE TO THE LANDING GEAR INOP LIGHT ILLUMINATING UPON GEAR UP SELECTION DURING CLIMBOUT. GEAR WAS EXTENDED MANUALLY AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RELAYS 3261-K5, K6, K8, K11 AND OPERATIONAL CHECKS WERE ALL GOOD. AIRCRAFT RETURNED TO SERVICE.