Adafruit R503 Fingerprint sensor LED's not working

When i try the example sketch everything works (enroll,fingerprint detection) but the built-in led ring isnt. please help. im also using an Arduino Mega2560 and the RX/TX are connected to (11,10) PWM.

You really need to post the sketch and a wiring diagram - see how to use this forum .

Meanwhile does the led work with blink example ?

Led is pin 13