What was found
(CAN) DURING CRUISE THE DECIMAL PART OF T5 GAUGE OF ENGINE 2 STOPPED GIVING INFORMATION. AFTER RECYCLING THE BREAKER THE CREW NOTICED THAT EVEN WITH BREAKER PULLED THE GAUGE WAS STILL POWERED. SHORTLY AFTER STARTING DESCENT, THE T5 GAUGE OF ENGINE 2 STOPPED GIVING INDICATIONS. 2 MINUTES AFTER A STRONG SMELL OF ELECTRICAL FIRE WAS PRESENT IN THE COCKPIT. THE CREW CARRIED OUT A NORMAL LANDING AND PARKED ON THE APRON. AFTER PARKING THE BURNING SMELL STOPPED. MAINTENANCE REPLACED THE NR 2 ENGINE T5 INDICATOR AND THE AIRCRAFT WAS RETURNED TO SERVICE.