There are a myriad of TRS sockets - behringer probably have their own designs, so you’ll likely find pcb shots online
what i’m getting to is that i have just bought some REAN(Neutrik) TRS sockets and the springs are all accessible from a view of the board, all you’d need to do would be to pry the spring up as much as a tip would before it springs back into the dip - this might give you the ability to tip out the tip - you’d probably have to pry all the tips up a few mm - it all depends on teh socket design and whether they have switched inputs, some will be easier than others, but you can get enclosed ones with nothing on the outside to play with
It’s a relatively painless thing to look at and seek advice on - i.e. once an technician looks at it your warranty would be no different than if you did so yourself, and keep iun mind anyway that these boxes are designed to eurorack, so they are going to be in/out of case anyway
it shouldn’t be any cost if you have a modest adventurous spirit, no need to do it if it looks like it might be tricky, but worth a look inside surely
here’s a breakout panel for a Behringer Neutron rear panel PCB
you can see it has easily accessible sprung contacts and they’re quite ‘aggressive’ looking in terms of the clamping angle, i’m pretty sure the ones i have are flatter and maybe easier to overcome - hard to tell from a photo - but nonetheless, all you’d need to do would be to gently pry those three prongs up (without deforming it, i.e. only a mm or two higher than it rests on a jack) - then without that clamping prong holding it within the end region it should tumble out
It may be different in the K2 wrt parts or layout, but it’s not a job requiring much more than patience and some ingenuity
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