"Tick" sound in headsets

Ed, Thank you for your input. Yes, the tip strobe is integrated with the nav light.

Definitely, turn the strobes off and you'll probably note the sound goes away,
If so, need to trouble shoot the system. The high voltage pulse that is sent thru the wing may have a beak down of the insulation along the way causing the pulse to "short " before getting to the bulb, thus, making it look like the strobe bulb is bad. If you haven't heard this before as you state, ticking sound is being caused by that high voltage pulse jumping to ground causing an arc which creates RF noise, which you are now hearing It could even be in the strobe assembly itself. What is the configuration of the strobe assembly ? Integrated with the nav lite?

I experienced a "tick, tick" sound in my headsets recently, which corresponds with the flash of the strobes, that had never occurred before. No recent changes with anything electrical, however I just discovered that the RH strobe is out, could this be related to the noise?? Thanks for any input.

Scott