Sonos Play 5 Motherboard Replacement

By the time you actually reached the motherboard the capacitors will already be discharged sufficiently to a safe level, so just go ahead there's no need to wait in this step.

That said, be careful once you have the motherboard out and decide to test it on your table. The two large capacitors are directly behind the full bridge rectifier that's connected to the mains, so without load they carry the peak voltage. In Europe with 230V that means 325V, in 110V countries that means 156V (see https://en.wikipedia.org/wiki/Alternatin... for more information about RMS and peak voltages).

NB: in the photograph, two antennas of the three soldered on the antenna PCBs are broken: You can see one standing upside down towards the center-right of the photograph

On my model, only 6 of the 8 screws hold the bottom panel. Looking at the picture above, where the screws are circles, the bottom row of 5 screws, the second and fourth screw are threaded for nuts, as opposed to the other six, which are threaded for plastics. These two screws can be removed once the bottom panel has been removed.

Like the previous poster said: in this step it is sufficient to remove the second and fourth screw cause these hold the front panel. Removing the front panel takes a bit of force and it is better to have the fragile WiFi antennas protected by the bottom panel.

The remaining six screws can be removed just before step 13 (which also misses a step, see my comments over there).

might be worth mentioning there are two strips of industrial velcro running along near the top and bottom that simply have to be pulled apart

Run the plastic opening tool under the grille to remove to pull the velcro apart. In that way you avoid bending the grille. Be careful with the speaker cones, though.

In my unit the top two screws marked in red had a rubber plug in the hole as well. I had to remove them by sticking a knife in and carefully pulling them out.

I had the same issue but no problem getting them out.

I pulled them out using the corkscrew method: I drove a screw about 10mm deep into the rubber plug, then pulled up the screw. This method created way less damage than other methods i have tried.

my unit didn’t have the tab in the middle of the connector. It simply had to be prised apart (I used a plastic spudger to separate the two parts of the connector) and then reconnected carefully (I used the plastic spudger again between the pcb and the case to support the pcb as it was flexing)

My unit has a white gasket between the front and back panel. It was stuck to the front panel when I opened the unit. When rebuilding the unit it was easier to remove the gasket and put it in the small ridge of the back panel.

Hi! Great guide. These three cords have been ripped away on my second-hand-unit. Where do they connect?

Thanks again!

Instead of these following steps, I unsrewed the 4 nuts, lifted the controlboard up, and kept the antennas connected, then I could remove the Powerboard with antenna connections intact…

The antenna connectors were hidden on blobs of yelliow glue, so I did the same as previous poster: unscrew the four nuts and lift the controlboard out instead.

One step is missing…you also have to disconnect the cable to the top circuit board with the volume buttons and led…

Are you referring to the 10 pin connector in Step "Motherboard"?

On my model, the motherboard is held in place with another six (i think) screws which go in the steel posts that support the motherboard. This step is completely missing in this guide. Interestingly enough, in the bottom panel removal step, the photograph does not show the screws, as if somebody had removed them: i honestly don't think that in any revision Sonos would leave the motherboard secured only by the screws on the back, where the connectors are, because the motherboard would rattle with music.