If there’s a fusible resistor in there it can be fixed, but in those cases the led usually doesn’t come on and nothing but the bypass works.

Otherwise it will be hard. But it can be a fun challenge if you like doing this kind of stuff.
Apart from a few caps it’s all smd…

I see it costs around 70 euros new. It will cost (a lot) more than that to get it repaired by a technician.
Maybe you can post some clear photos of the pcb?

Here’s a blurry one I found online.

Thanks, but that photo is not really helping a lot:

By clear photo, I actually meant something like this: (just an example photo of my ehx Worm)
https://i.postimg.cc/zzjcM6RR/DSC06906.jpg%5Dexample photo

That way, we can zoom in on the components, like this:

The first photo in my previous post comes from your blog.