Repair ZP120

Awesome stuff! I was able to remove mine w/o removing the caps but it certainly would have been easier w/o them. One tip... the heat sink paste Sonos uses is really cheap stuff. If I didn’t know any better I would think it’s just white lithium grease. If you remove the PWM, clean it and use the arctic silver 5 thermal paste. It will distribute the heat much better.

Hi All,

I just purchased a CONNECT: AMP from eBay. The auction description says it does not power on and I am hoping to use this thread to troubleshoot and fix it.

@m0untainman and @gruv2ths: Can you tell me where you purchased your part from?

Thanks,
Andy

Tough question. There is no go-to source. Some of the choices that Sonos has made are exotic, like the integrated PWM they use for the bias converter. They use a non-integrated pwm for the amp power supply, also not available from Mouser and the like. You can always get stuff from China via eBay for example.

Hi All,

I just purchased a CONNECT: AMP from eBay. The auction description says it does not power on and I am hoping to use this thread to troubleshoot and fix it.

@m0untainman and @gruv2ths: Can you tell me where you purchased your part from?

Thanks,
Andy

First bust it open and find what may be bad. Follow some of the diagnostics in this thread. It can be one or multiple parts. For me it was 3 parts. A dim bulb tester is your friend and without that, expect to blow even more. The fact that it will not turn on is a semi-good thing as its a pretty decent bet its the power supply.

As for parts, you can try Mouser or Digikey. But as gruv2ths said, some of them are exotic parts and difficult to obtain in the US. The 2 places I got mine from are Aliexpress and eBay. They will likely come from China/Hong Kong/Taiwan, and expect a solid 20-30 day wait. They are all obtainable.

Feel free to ask questions here and we can try to help you on your quest to fix this.

@m0untainman and @gruv2ths: Thank you both. I will be opening the unit when it arrives and will update this thread once I do.

Andy

Ando, did you get the ZP120 on eBay this weekend that went for $50 ish? If so smokin' deal!

Ando, did you get the ZP120 on eBay this weekend that went for $50 ish? If so smokin' deal!

No but I saw that one after it ended. That was a good deal! I got a newer CONNECT AMP for $150. Hope it will be an easy fix!

On your first one getting the chassis apart is an adventure.
If there is no blinking lights, then you prob have a blown fuse and no bias converter.
Listen to m0untainman, he knows what he is talking about. Replace the blown fuse with a 110V light bulb.
Then go looking for trouble.
Have fun!

Thanks! I just got notice the unit shipped and will be here next week. This weekend I am going to build a dim bulb tester and am planning on following Daniel's blog on disassembling the AMP. I am pretty good with soldering and have already checked out some possible part replacements on eBay.

Edit: I just found a site with some pretty good directions on building the dim bulb tester: http://www.geek-tips.com/2015/11/22/dim-bulb-tester/