USB c port burned

had a USB cable melt and burn my USB port. new one installed.


Do you know what caused the issue with the cable? I had two different USB C cables begin to smoke over the past year. That was pretty scary actually, as one time I was just about to go to sleep. Threw both cables away immediately.

no, but my guess is a short inside the connector of the USBc 10g cable, after it had warmed up so much it started to melt the hotglue/plastic encansing, that had also gotten into the port on my phone. I bought a new batteri as well but I don’t think it needed it.

I think those data cables just get to hot when used for charging. but I don’t know for sure, gets warm.

Certainly not nice, that!

Do you know if that was a cheap no-name cable or something that should have been quality?
The contacts in those connectors are certainly very close together. So quality issues in manufacturing could cause a short, I imagine. Also, not all manufacturers might take the power rating too seriously and cheat on marking the cable for higher current. This could lead the the cable just being used over its actual design capacity and get far too hot.

In my case one of the cables that started smoking was sold (and I think manufactured) by the german hardware store ‘Bauhaus’. It was one of those cables with fabric coating. They sell these as charging cables near the batteries next to the cashdesk. But it’s been some time since I purchased that one.

The other one I do not know too many specifics about. I do not keep track of every one of my USB C cable’s life story. ^^

Let me just say that I don’t consider stuff sold under the “Bauhaus” label as brand products. :see_no_evil:


A FP3 example…

Btw which FP do you use?


In my case it’s an FP4. OP also has 4 written in their profile, so assume that’s their model as well.

I dont like to assume when adding tags, so thats why I’m asking :wink:



that was mine, don’t remember where I bought it, might have been class ohlson here in sweden. I tried to open it to look at the leads, but didn’t work.


Bauhaus includes some very cheap brands in their assortment (stuff that’s next to useless – looking at you, G*O* here!). What they re-sell under their own label may or may not be in the same class. Maybe there’s a hint of the original manufacturer on the package, or the fine print in the instructions leaflet, to know for sure?

((I found keeping Sturgeon’s law (actually, ‘Sturgeon’s revelation’) in mind when buying stuff to be very helpful to cope with the low quality in mass product is in almost every industry. Disappointment prevention, you know.))

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There is a spread of quality in USB-C cables.
I tend to find the cables that come with Samsung phones are adequate but not great.
The cables you pick up in your supermarket aren’t likely to be good quality due to the low price.

Through a process of elimination I have found that USB-C cables by JSAUX are pretty good. Their cables are labelled with their power rating. I’ve got one for my phone charging and another rated at 60W for my Steam Deck power bank.


I have an other case of “burned usb-c-port” (of a Fairphone 4).
A replacement port has been ordered. I guess that will make this phone usable again. Actually it is still usable for 2 days, as it happened when the battery approached 100% of its energy storage capacity. I really wonder what could be the cause, and… I could not find conclusive explanations yet.

When the battery energy storage capacity goes towards 100%, the charging current will be lower, or even very low. That means less cause for heat generation.

Could there be some short-out in this Fairphone causing the trouble? I guess we will see whether there will be smoke signals again, in two days… :grimacing:

Still “something wrong” with the cable can not be ruled out too (in this case). The cable is of a 3rd party, not known brand. But not of a particular cheap quality. It is just a USB-C cable.

Somehow that old lightning cable design of that other brand, has some design advantages. There are no delicate pins in such cables. Oh well… :thinking:

Small update, as I mentioned: "I guess we will see whether there will be smoke signals again, in two days… :grimacing: "
Unfortunately it takes quite a while before the usb-c-port-part arrives, as it seems. Its more than a week now. So I do not know yet for sure, if it will fix the issue.
Had to move over to an other, older Android phone in order to keep doing the necessary smartphone-things. I surely hope to receive a small package soon…

Again an update:

It took somewhat more than a week before the small package arrived at the local package office. And then I never got a notice of that, I had to ask for it myself. Anyway, it arrived. I installed the new USB-C port in the Fairphone 4. There was a bit of damage inside the phone as well, as the shortcut in the cable resulted in a very hot situation. But the damage was not critical. After installing the new USB-C port everything works as aspected now.


My fair phone was charging correctly with its usual charger when i checked again and It was dead. I unplugged It and tried again later on that day. Once again, It didnt charge with neither my charger ir my friends’. Anyways, i left It with its usual charger for around 20 minutes and when i came back, the phone was boiling and the cable had melted., Leaving the USB really stuck inside the phone.

Hi and welcome, moved your post here, see above.

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