[spysky]

I currently have a problem with on of my keys.
It stopped working completly, so I first tried to replace the battery. It seemed to work, but I had already changed the battery weeks ago and the voltage was still around 3V.

A few days later, it stopped working again, removing and reinserting the battery fixed it for the moment.
This worked for 10 times or so, but now it stopped working completly.
When inserting the key into the "keyfob" it still works.

I have opened the key now, but I see anything bad on the board. Does someone know the usal problem with the pcb and what I could check?