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Listen to m0untainman, he knows what he is talking about. 5m0265e reading 5k0265r at 1 and 3 with a dim bulb as well. I replaced them and just as I thought, the PWM pulls down the voltage. The circuit is divided into several blocksan SMPS circuit directly. Active topics Beam Music Quality 4 minutes ago ZP80 cuts out when grouped with Sonos 1’s icon 5 minutes ago Playback stops all the time!! That is with the dim bulb installed so it is probably a little bit higher.

5MR – FCS – PMIC – AC DC Converters, Offline Switchers – Kynix Semiconductor

Replace the blown fuse with a V light bulb. Playback stops all the time!! A 60 watt bulb seemed to do the trick for finding the failed component. If you remove the PWM, clean it and use the arctic silver 5 thermal paste. I tried a desoldering pen too, but to no avail. I tried to short those too, but got nothing.

I tried a watt bulb and it let too much power through, so the bad components would get raging hot quickly. They show nothing using a 60W bulb. SMPS with minimal external components. IMHO, that was invaluable.


(PDF) 5M0265R Datasheet download

Setup for 65 square meters living room icon 1 hour ago. Sonos Beam playing by itself icon 25 minutes ago. That sent me on a Youtube and reading spree that gave me the tools and confidence to diagnose and fix the problems.

Just need to get that piece off but I dread it since it has a lot of solder points and the heath sink. I’m guessing the short is somewhere in that area.

You can always get stuff from China via eBay for example. It is critical for testing any sort of power supply to keep you from blowing more components. The 5j0265r is warm so its the likeliest suspect at this stage. I once removed datasheer inductor it was a real pain getting all 4 wires back in in an attempt to find out if my short was in the rectifier 2 diode packs clipped to the chassis or the load.

I really want to encourage people to post in these forums for help. We will get good at this some day, maybe Sonos will hire us?? Is that with or without the PWM attached? Without this, I would have destroyed multiple resistors and thermistors that kept blowing. Also, the dim bulb was brilliant. That site and doc really walks through the different sides of a power supply and what to look for.


Figure shows a detailed block diagram. If so smokin’ deal! Can you tell me where you purchased your part from? I had to get creative and solder wire patches to get it through the hole so I could solder the leads back The PWM is not switching therefore no secondary voltages will show up.

5M0265R Datasheet

The pulse 5m0265g of Fig. Previous 1 1 of I think I have detected a short on it or something connected to it All other product names and services may be trademarks datashest service marks of their respective datasehet. Has anyone taken one apart? On your first one getting the chassis apart is an adventure. Walter Karppinen earned the badge Meet and greet. I get some voltage on the primary like 10vbut nothing on the secondary.

During ‘inhibit SMPS ‘ the AO output is fixed to zero charge current forthat the circuit switches over to normal charging. Nobody carries some of these parts in the US, so I need a long wait from China yes not Mouser or Digikey – seems to be special order.

I want to personally thank gruv2ths for the insight dafasheet this, and chicks for the dim bulb ideas. The circuit is divided into several blocks which are describedtyp.