ir led on mega 2560 board

I can get a standard led to fire but can not get IR to function. Any ideas?

Hi. How do you check that IR is functioning or not ? I mean what type of sensor are you using to receive IR signal and what type of signal you are expecting ?

Infrared leds usually consume more current than conventional leds reaching 50mA then you need the current limiting resistor and also need a driver for its full operation, to check the operation of the LED besides measuring current and voltage you can use a camera of smartphone and check the screen if it has brightness on led