It sounds like there could be a couple of potential issues with your Wheelock E50-24MCW-ALR speaker strobe. Firstly, check the power supply to ensure it’s providing the correct voltage to the device. If the power supply is fine, then the next step is to inspect the wiring connections. Loose or damaged wiring can prevent proper functionality. Additionally, ensure that the device is properly programmed and configured within your fire alarm system. If all else fails, the device itself may be faulty and require replacement or professional servicing.