Gooseneck LED Console lamps are only sold as complete units.
If you have a dead LED a good service engineer should be able to replace this,
but all 4 LEDs must be replaced at the same time.
part number: AE5265 (LED 5MM WHITE FLANGLED)
LEDLamp is available in 2 versions:
LEDLamp-X Right angled, designed for consoles with lamp socket on the rear panel
LEDLamp-SX Straight, designed for consoles with lamp socket on the front panel
Recommended power 12V DC @ 35mA
Range allowed 10 - 18V AC or DC