XPS 15 9500 not charging

XPS 15 9500, 4K Touch. 18 months old. 

Recently (2 months or so) I noticed when I plugged the charger it didn't start charging. No matter the USB-C port, no matter how many times I tried. It kept discharging (the notice about "Not charging" appears). This is obviously with the official charger. 

The laptop has lived 90% of its life fully plugged in as a Desktop. It's just occasionally that I take it away. 

As I was guess it was sort of a "software issue", I did a test and it worked as workaround. When it happens again, and it does often, I shut down completely. Then I plug it in (where there's only electricals at work, and not software involved), and the plug-in action is what turns on the computer. When I plug it in, I see the LED switching on, and then it boots normally, and it's recognized without problem. 

The problem only happens again once I disconnect the charger at some point, or it goes to sleep and turns back on, that might not be recognised again. As long as I don't disconnect, it doesn't happen. 

Any ideas? Everything is updated, and this had not happened (or I didn't experience it) months ago. 

Also, around the same time this started happening, I also noticed another issue. Unknown if it's related. While plugged in and charging, and playing or doing intensive tasks, I've seen the LED blink orange. The pattern is 1 white 4/5 orange I think (it's pretty fast so I'm unsure). I checked the system diagnostic lights and it says 

1,5 - i-Fuse Failure

Other patters do not match closely what I see. There´s no 4,1, or 1,4, so my guess it's 1,5. However, I couldn't find anywhere anything about this i-Fuse. And it's weird it only notices and does it from time to time, and specifically I noticed when gaming. Again, no idea if it's related. 

Thanks. 

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OS Name Microsoft Windows 11 Pro
Version 10.0.22000 Build 22000
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Manufacturer Dell Inc.
System Model XPS 15 9500
System Type x64-based PC
System SKU 097D
Processor Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz, 2592 Mhz, 6 Core(s), 12 Logical Processor(s)
BIOS Version/Date Dell Inc. 1.10.0, 28/09/2021
SMBIOS Version 3.2
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer Dell Inc.
BaseBoard Product 05XYW7
BaseBoard Version A00
Platform Role Mobile
Secure Boot State On