My ancient Peltor earmuffs have started squealing in my ears when I'm wearing them. Haven't had the contents of my skull out for inspection or service so I know it isn't simple feedback between the muffs. Is there any easy way to stop this? My knowledge of electronics is pretty much limited to battery changes and operation of the On-Off/Volume knob.
Strictly speaking, they don't owe me anything, but I hate to toss stuff out if it can be repaired. My parents were Depression-era kids who learned to "make do" and taught us likewise.