Tell us about yourself!
If some has the parts, expertise, education on electronics, test equipment, time, etc., then it's an easy project. But without those things, the CPR is an option that would save me days or weeks of time, major anxiety, frustration--a trade off I would spend the $86 to stop the phone calls. Glad you can do it with a minimal investment, but I also imagine there are others who would opt for the CPR unit for themselves or a Holiday gift. Nothing negative here, just pointing out facts.
Snow Saw, part 2: Midlife crisis on a budget