SONOS Sub (Gen. 1) Teardown and Fault Analysis (Completely Dead)

Let’s open a dead SONOS Sub and see what’s wrong with it …
↓↓↓ Complete description, time index and links below ↓↓↓

When a friend asked me to have a look at his dead SONOS Sub, I did not turn him down. But let’s face it, SONOS products are not exactly repair friendly. Anyway, I’ll show how to open a SONOS Sub with the least damage possible.

After a first look inside we remove the power supply / audio amplifier board. Further inspection reveals that the power supply section is gone for good. But using an external DC supply we can bring the whole thing back to life. So there’s hope.

UPDATE – Actual repair video is available now: “SONOS Sub (Gen. 1) Repair (Replacement Power Supply)”    • SONOS Sub (Gen. 1) Repair (Replacement Pow...  

00:00 Intro – a dead SONOS Sub on my bench
00:47 Outside look/measurement – it draws some power
03:37 Opening the thing – repair preventions at work
08:04 First look inside – two casualties spotted
11:11 Removing the board – not that hard
15:51 Inspecting the board – another casualty spotted
21:52 Failure analysis – probably even more casualties
29:56 First assessment – repair would be tedious
32:31 Injecting DC – but for the power supply, it’s alive
36:51 Repair plan – completely replace the power supply
39:39 Wrap-up – a decision has to be made, bye

Teardowns    • Teardowns  
Repairs    • Repairs  
Small Project: AC Mains Isolation Transformer from Two Broken UPSs (1/2)    • Small Project: AC Mains Isolation Transfor...  
Small Project: AC Mains Isolation Transformer from Two Broken UPSs (2/2)    • Small Project: AC Mains Isolation Transfor...  

#sonos #sonossub #subwoofer #teardown #disassembly #disassembling #repair #fix #robertssmorgasbord