This Bluetooth speaker came in with the report that "It rattles" and does not work properly. Taking it apart was a difficult job as I'd never dealt with one of these before, but watching a fellow YouTuber - "Lets Fix Computers" - Graham, showed how to get inside. Following his example I managed to get inside the speaker. Once inside I discovered a loose filter block. I then had to remove the PCB, refit and test the device, it worked perfectly. Reassembling the unit and repairing the damaged cabinet parts I was rewarded with a fully operational and great sounding Bluetooth speaker.
Watch the full repair video here: