@Waltman any luck? Just happened to me this morning-have had switch since 2022

  @Madalenc 

Mine started doing this after about a year. I think it's broken.

  @TPBob I have an HS200 that's probably 5ish years old. Started doing the same thing as described in this thread. Any luck getting yours back online?

On my end the app shows the device offline. I've pushed the reboot and rest buttons. Threw the breaker to the switch. Removed the device from the app and tried to reinstall the switch. No luck.

Next I will remove the switch from electrical wiring, rewire and see if it resets itself. Doubtful, but worth the effort since I'll be installing a new one anyway if that doesn't work.

Count me in as another victim of this failure mode, happened just last week with an HS200. This one's been in service with no issues for just over a year, then suddenly it started exhibiting the symtoms you all describe. I am a EE by training and have over 40 Kasa devices in my smart home so I kinda know what I'm doing. The symptoms are the same as a faulty neutral, but I'm 100% positive the neutral is fine and was properly connected. I happened to have a spare HS200, and upon swapping it, the fixture works properly again.

Looking over the forum posts, this seems to be a fairly common problem exhibuted by multiple device types in this product line. It would be nice if someone from TP-Link would comment on it as they must be aware of a common failure mode these devices are all exhibiting.

Same thing here - clicking switch after a couple years of service. The defective switch was one of a 3 pack I got on a prime day. I did the warranty route: registered the 3 pack then requested an RMA for the defective one. The catch is that they want you to pay fifteen dollars for shipping and will put a hold on your credit card for the full retail amount until they receive the defective one back. I was also unsure if they wanted all 3 back, but I just returned the one. It all worked out, and I received a new 3 pack for shipping cost of the one.

If your defective switch was a single pack, the warranty RMA isn't worth it, but if one of a 3 pack, then it's a deal. If they offered free RMA shipping, then they would have more defective units to analyze and figure out what's going on.