A few days ago home internet started acting funny.
At first I blamed my ISP, than #PiHole that runs on my #RaspberryPi, but none turned out to be the reason. The reason was this UPS that powers my main WiFi router base.
When I pulled the plug out of the UPS I found a cable in quite a miserable state as you can see.
Having examined further I found that a small zener diode got shorted.
Replaced it with the one with a higher voltage rating and it's back to work as expected.
repair #ifixit