<![CDATA[Hey #Fediverse,]]>Hey ,

Need your help to recognize some electronics defect.
It seems the beurer massage gun I have is showing that it is continuously charging even when not connected.

I opened it and I see that one resistor has blown up in half.

The problem I have is that I don't know which one should I get to replace it. I didn't find the pcb ref or design ofc.

Any ideas?
Yes its a shot in the dark, but who know :p

Update :
Thanks for everyone who replied.
I doubt I am going to repair it since figuring out the blown up component and probably L2, and that's without a schematics to probe what should be working connected etc. :/

]]>https://forum.pierobosio.it/topic/ffe13406-2b9a-4c88-a08e-f5ba5aee092e/hey-fediverseRSS for NodeSat, 02 May 2026 13:06:22 GMTSat, 04 Apr 2026 20:06:08 GMT60<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:57:42 GMT]]>@lumiya thank you very much!!
That's a start at least, more than what I had.
I'm also searching to see if someone else disassembled it, but it seems no :/

]]>https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348437272089316https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348437272089316Sat, 04 Apr 2026 20:57:42 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:55:47 GMT]]>@lumiya I am searching

]]>https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348429761438403https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348429761438403Sat, 04 Apr 2026 20:55:47 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:55:15 GMT]]>@YvanDaSilva

First of all sorry for the many comments...

You mention charging issues and the blown Resistor is close to the "CN3303" (might be https://www.lcsc.com/product-detail/C3034873.html ) I found an English Datasheet for that
https://make.net.za/wp-content/datasheets/Consonance%20Elec%20CN3303%20Datasheet%20v2.1.pdf

From the Charging issue as well as the seamingly larger footprint than the other resistors, I would assume you blew a Sensing Resistor. Could be "R_{CS}" Page 2 Figure 2.
Would also make sense as its close to the SOT23-3 "A07T" search results show that it could be a PMOS, and close/connected to a big coil "L2"

I hope this helps 🙈 to figure out what value the resistor should have had.

]]>https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348427660886268https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348427660886268Sat, 04 Apr 2026 20:55:15 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:36:56 GMT]]>@YvanDaSilva

Just thought of another possibility. Maybe you'll find somebody online who already disassembled it. Like a teardown where you could check and see if it's the same PCB.

]]>https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348355642254927https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348355642254927Sat, 04 Apr 2026 20:36:56 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:35:08 GMT]]>@YvanDaSilva

Sounds like you would need to do some partial reverse engineering then.

]]>https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348348593286969https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348348593286969Sat, 04 Apr 2026 20:35:08 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:31:42 GMT]]>@lumiya it is not readable, it burned up :(

]]>https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348335051446651https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348335051446651Sat, 04 Apr 2026 20:31:42 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:28:56 GMT]]>@YvanDaSilva

Is the marking on the blown resistor still readable?

If not I think you would need to figure out what it's purpose was. Then you could check the reference design for the corresponding IC.

]]>https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348324191942052https://forum.pierobosio.it/post/https://lgbtqia.space/ap/users/116144755732139270/statuses/116348324191942052Sat, 04 Apr 2026 20:28:56 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:26:02 GMT]]>@smellsofbikes I see :/
Well I guess it's over for this thing.

]]>https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348312792505455https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348312792505455Sat, 04 Apr 2026 20:26:02 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:24:38 GMT]]>@ambraglow.org yep, might also be cooked.

]]>https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348307270693057https://forum.pierobosio.it/post/https://hachyderm.io/users/YvanDaSilva/statuses/116348307270693057Sat, 04 Apr 2026 20:24:38 GMT<![CDATA[Reply to Hey #Fediverse, on Sat, 04 Apr 2026 20:17:40 GMT]]>@YvanDaSilva the damage I see is to L2 which is an inductor. Whatever happened was pretty bad and it's not likely you can replace that, nor is it probably the problem: it's likely something else went wrong and vaporized that. If you're feeling lucky I can probably figure out which inductor to order from digikey.

]]>https://forum.pierobosio.it/post/https://mastodon.social/users/smellsofbikes/statuses/116348279856105192https://forum.pierobosio.it/post/https://mastodon.social/users/smellsofbikes/statuses/116348279856105192Sat, 04 Apr 2026 20:17:40 GMT