What was found
AFTER CALLING V1, PILOT NOTICED BOTTOM PANEL RADIO LIGHTS GO OUT. UPON COMPLETING CLIMB CHECKLIST, ENTIRE RT SIDE PANEL LIGHTS WENT OUT & AIR CREW SMELLED SMOKE. AN EMER WAS DECLARED. ACFT WAS CLEARED TO LAND, WHICH IT DID WITHOUT INCIDENT & MET BY AIRPORT FIRE DEPARTMENT. EMERGENCY CREW SCANNED ACFT WITH A THERMAL SCANNER & FOUND NO ISSUES OR CONCERNS. UPON TROUBLESHOOTING FOUND INSTRUMENT PANEL LIGHTING TRANSFORMER TO HAVE FAILED INTERNALLY. THE AFFECTED PART WAS REPLACED & FUNCTION CHECKED. SYS WAS FOUND TO BE IN A SATISFACTORY CONDITION. AWAITING MX WRITE UP & SIGNOFF FOR FAILED PART INFORMATION FOR SECTION 5 BLOCK B C & D.