Hi karlafromfarmington hills,
welcome to the Apple (user-to-user) Community.
Re: Static/crackle in AirPod Pro : Does anyone have any other ideas?
Wondering if this Apple support article could be of any help:
If your Air Pods Pro (1st generation) make crackling or static sounds - Apple Support
Eg: says:
✽ "Check that your connected device is nearby,
and there's no wireless interference or obstructions between you and your device.
✽ Listen to audio from a different app to see if the app causes the issue."
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Also, something in here may help::
Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support
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You may be able to buy just the one right airpod as a replacement ... eg: you can get an estimate online.
About Replacement : AirPods Repair & Service - Apple Support
says:
"You can replace a single AirPod (left or right AirPod) for a fee.
Use our “Get an Estimate” tool to review potential costs if you get service directly from Apple".
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More info: AirPods Express Replacement Service”
AirPods Express Replacement Service - Apple Support
says:
"if your product has an issue that isn’t covered by an AppleCare+ incident or our warranty or consumer law, you’ll pay an out-of-warranty fee".
All the best :-)