Based on your description, it sounds like there could be a few potential issues causing the erratic behavior of your Wheelock HSR-A horn strobe. Firstly, I would recommend checking the power source to ensure it’s providing consistent voltage within the required range for the device. Fluctuations or inadequate power could cause the strobe to flash inconsistently and the horn to sound faint.
Secondly, inspect the wiring connections to ensure they are secure and free from any damage or corrosion. Loose or faulty connections can result in intermittent functionality.
If the power source and wiring connections appear to be fine, it’s possible that the horn strobe itself is faulty and may need to be replaced. However, before doing so, try resetting the device to its factory settings, as sometimes a reset can resolve unexpected issues.
If the problem persists after these troubleshooting steps, it would be advisable to contact the manufacturer’s customer support for further assistance or to schedule a service call with a certified technician.
Remember to always follow proper safety protocols when working with electrical devices, and if you’re unsure or uncomfortable with any aspect of troubleshooting or repairing the device, seek professional assistance.