What was found
ON DESCENT, WE HAD RIGHT ESSENTIAL BUSS FAILURE AND RIGHT BATTERY OFF. WE ASKED FOR VECTORS TO A VISUAL RUNWAY DUE TO ELECTRICAL AND NAVIGATION EQUIPMENT. EICAS RED PFD AUTO PILOT FAILURE, FLIGHT DIRECTOR FAILURE, FLIGHT MODE FAILURE... BOTH PROBE FAILURE, FLAPS FAIL, ELECTRIC FAULT, STALL PUSHER OFF, R ESS BUS FAIL, OUTBOUND BRAKE FAIL, TAWS BASIC FAIL, L HYD DC PUMP FAIL, R BATTERY OFF... KTEB CLEARED US FOR VISUAL RNWY 6 AND EMERGENCY EQUIPMENT WERE ROLLED. I STILL HAD BASIC FLIGHT INSTRUMENTS AND GEAR DID FUNCTION AND FLAPS DID EXTEND SO I LANDED THE AIRCRAFT. ON THE GROUND EMERGENCY LIGHTS, FLAPS, PARKING BRAKES WOULD NOT RETRACT OR DISENGAGE. (NOTE: ATC DECLARED EMER FOR CREW) MX C/A: REMOVED & REPLACED FAILED RH DCPC PROTECTION PCB WITH REPAIRED PCB. OPS CHECK GOOD REF BOMBARDIER CL-300 AMM 24-61-77. REMOVED PROTECTION PCB - PN: 3S5CE03Y06/SN: 817F INSTALLED PROTECTION PCB - PN: 3SSCE03Y06/SN: 461F CONDITION: REPAIRED.