Hi,

LED or Xenon type flash? Two totally different animals. Can you post a picture?
LED is low voltage, simple swap out (more or less). Xenons work totally differently. I have some bulbs on hand that may work, surplus houses have them or you can pull them from used equipment. They have three leads, all high voltage. Two are soldered on either end of the bulb or tube, one is usually wrapped around the glass bulb.

DO NOT TOUCH THE GLASS WITH YOUR FINGERS! The oils from your skin will damage the bulb over time, actually any residue will generate a lot of heat when they fire off or flash!

Nice ZAP if you touch a wire when you are not supposed to.