Everything in one place: every fix for your ChiliPad's noise, from free to full build, with what each one fixes, what it costs, and how hard it is. Two companion files have the deep dives:
chilipad-noise-theory-and-science.md— the research, debug tests, and the physics of why each fix workschilipad-soundproof-box-build-plan.md— the full box build, step by step
- Not the power supply — no whine when the unit is off.
- Happens while running: hum + gurgle + whine all at once.
- Hum = compressor (normal, can't fix — the box muffles it).