Sonos Play:1 was released on October 2013. It is a wireless speaker system that features a 3.5 inch mid-woofer and tweeter. Repair of this device requires screwdrivers, tweezers, and prying tools. Model number: PLAY1US1BLK

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Blown capacitors on Sonos Play 1

Both caps on the high voltage side are blown. PCB markings MOV301 and TH301. At least I suspect they are both capacitors... hard to see since they are burned out... does anyone know what to order and replace with?

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First of all these are not capacitors. The one marked MOV301 is a Metal oxide Varistor and the one marked TH301 is a thermistor. These are both protection devices. If they are defective, than there is probably something else wrong with the unit that caused these to fail. Can you read any markings on the parts themselves? The markings should help to locate replacements.

Dan

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I also realized that and the thermistor I have found, but the varistor is completely burned out. I also found that the fuse is blown, but that was easy to find. Do you know how to safely select a MOV that would work?

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I have the exact same problem. Can you tell me what value I should order? To be on the safe side I added a photo.

Thanks for the effort

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Hi Ikke Zelluf (dus jijzelf), meanwhile I've found them and repaired my Play:1, as you can read in my adapted post. Did you find your replacement yet? Otherwise, you can get a TVR07431 from me quickly!

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Mine (at least th301) is busted too. It happened after getting 400 volts instead of 230 volts for 6 hours. It would be nice to find out what components they can be replaced with.

Btw Sonos offers trade in, so you can get a defective unit replaced with a new one for less than the price of a new one.

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In my case, the TH301 thermistor has burnt even without any problem in my electrical installation! One or two days before my Play:1 went dead, its back side was getting extremely hot. I’m not shure, but I guess the failure has something to do with the fact that for 4½ years, I always powered it off by a single pole switch, when not listening to it. Maybe power peaks at each startup wore out the TH301.

And MOV301 doesn’t look very well neither.

I couldn’t read the references anymore.

Another Play:1-owner gave me these, as you can see in the pictures:

TH301 (green thermistor): SCK 052

MOV301 (ocher metal oxide varistor): TVR 14241

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The SCK 052 can be found on Ali Express.

The MOV301 in my device was a TVR 07431*, as shown by Ikke Zelluf.

This reference means 7 mm diameter, 431 voltage and D-type (high surge).

Can also be found on Ali Express, but as a regular type.

I had to order 20 pieces of each, for less than €6 in total. Delivery only after several weeks :-(

Finally, after replacing TH301 and MOV301, my Play:1 works well again, and stays much cooler at the back side.

Thanks to iFixit!

(Sonos doesn’t do repairs and asks 125€ for an exchange with another refurbished device.)

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See my answer. I hope this will help you.

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Hi Ikke Zelluf (dus jijzelf), meanwhile I've found them, as you can read in my adapted post. Did you find your replacement yet?

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Does anyone know where I can buy a power/volume switchboard?

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Niclas Ivarsson 가/이 대단히 고마워 할 것입니다.
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