EEVblog 1605 – Chasing Fart Noises – JBL Charge 3 “Repair”

Dave is chasing fart noises in this JBL Charge 3 waterproof speaker.
A teardown, and powerup on the bench to find the mysterious fart noises.
Will it get repaired, or will the fault do a Harold Holt?

Part 2: https://www.youtube.com/watch?v=u7sVGnrf0P0

Forum: https://www.eevblog.com/forum/blog/eevblog-1605-chasing-fart-noises-jbl-charge-3-repair/

00:00 – JBL Charge 3 Waterproof Speaker Fault
02:17 – Teardown
07:13 – Drivers
08:16 – Passive Radiators
09:58 – The Case Moulding
10:46 – Main PCB
11:36 – Under the microscope
15:30 – What’s this Power Rail doing?
18:07 – Power Rail Capture
20:16 – Are we chasing a red herring down a rabbit hole?
20:56 – Trying to capture the fault: Oscilloscope vs Microphone
22:22 – The Fault has done a Harold Holt

Podcast: Download