bangle js2 doesnt react at all

My bangle js2 worked fine for the last half year. But since today it doesn't react anymore. The display is still on (without the backlight) but the display doesn't refresh anymore.
Pressing the Hardwarebutton doesn't work. Also, long pressing doesn't do anything. I also can't connect via Bluetooth. Is there another way to hard reset the watch or should I just wait until the battery is empty and hope the watch will turn on again while charging? The last battery status was at 40%.
Is there maybe a way to speed up the discharge, so that the bangle turns off?
Greetings Heinrich

Have you checked this thread out? It sounds similar to @map 's problem.

I have read it. I will wait until the clock turns off. I'll let you know if the clock works again after that.

Hi - sorry to hear that... Do you still have the tape on the rear contacts of the Bangle?

If not, please could you check and see if there's a voltage between the leftmost pin and the 3rd from the left?

Do you remember anything happening that might have caused this? Hopefully if it was at 40% and you haven't charged it much, the CPU might be locked up and drawing more power so it won't take too long to flatten

Hello, thank you for the quick responses. The watch was empty overnight. After a short charge, it started as usual. At the moment, everything is running as usual again.
I think the watch crashed when I tried to connect it to the charging cable. But I'm not entirely sure.
When it will happen again, I'll try to measure the voltage.

Great, glad it's going again.

I think the watch crashed when I tried to connect it to the charging cable

That is interesting... Do you still have the tape on the middle two contacts? Definitely if you force the charge cable on backwards (when usually the magnets would try and push it away) it can cause big problems for the watch, but usually the magnets mean contacts never touch unless the cable is aligned right

No, I don't have the tape on the middle contacts. I don't think that I pushed the charging cable the wrong way.

No, I don't have the tape on the middle contacts

Ahh, ok - please could you try and add something? Either tape of lacquer: https://www.espruino.com/Bangle.js2#cont­act-corrosion-skin-irritation

It'll stop the other contacts corroding but may also stop this happening in the future