@MSIMaker I've replaced the ones that have failed with Meross smart plugs. Unfortunately the Meross ones are much bulkier and can obstruct the outlets beside it, unlike these TPLink ones, but I'd rather that than ones that fail in 1-3 years.

The Meross ones have been great so far (same can be said of TPLink's older, bulkier Kasa smart plugs which are still going strong, and I suppose these ones prior to them failing), but the caveat is I've only been using them for about 6 months so I can't make much judgment on their longevity quite yet.

  @estatika 

just got home from holidays and found 2 clicking away and obviously broken. This make the total for me to be 4 now. 
 

I am getting worried and was wondering if anyone has found a suitable replacement yet? I use mine mainly for monitoring only and controlling standby power when I am away sometimes. 

  @vjbutt thank you so much! the fix wotks perfect on ep25p4, after i just finish the fix i just found they have 2 year warranty!!!

the most dificult for me was opening, and then removing the soldering of the ac, then change it with 470uf 16 volts and al least it now works, lets see for how much time

thank you!!!

  @disgruntledat It doesn't help that JB is an absolute disgrace when it comes to honouring faults covered by Australian Consumer Law as soon as a product falls out of the manufacturer's own usually pitiful warranty. Several of mine are also from JB and I never bothered to take them back for replacement/repair because of this.

@everyone I've had a gut full of this in all honestly. I've been dealing with this now for 2 years. I've bought 30 of these devices (KP115's) and so far 15 out of the 30 have died. They've not all died at the same time so I've taken them back to JBHiFi one at a time and got the run around from them each time taking about 30 mins to find the receipts on their systems and done RMAs on all 14 so far.

Today I went to take another one in, that only just failed, to them and they point blank refused to replace it because they said it's now 200 days out of warranty from the receipt they could find. Mind you they didn't take the receipt for receipt so the dates are not the dates on the receipt for the exact device. So who knows which device belongs to which device/receipt any more?

Either way, the device is a dud. In Australia, if a device doesn't perform the way it's supposed to be manufactured it needs to be replaced, refunded or repaired (ACCC law). 

TPLink I say to you how can you let your consumers down and not offer a replacement easily here by letting retails know there's a known fault with these devices and they should be replaced if anyone has one gone faulty on them? It's not simply good enough to just pull them from the shelf and replace them with a new device called Tapo (TP110) and let the consumer fight for their rights. $840 down the drain, why steal from my pocket when you are the ones making faulty devices?

Another bites the dust. That's 3 failed the same way now

 I've got a third one fail now. Unbelievable, that's half of mine dead. At this rate I wouldn't be surprised at 100% failure rate by the end of the year.

i haven't had time to open them up to look at the capacitors or relay. Contemplating whether it's worth doing that or just trashing these pieces of junk.

I just had a KP115 fail in the same way, it was connected to a freezer which had ~30W usage most the time with 300W occasional jumps. The switch probably got used twice since purchase (it was bought for tracking energy, not switching). The likelihood is my freezer had probably been getting switched on and off twice a second for a couple of hours before it got caught so there is a chance the compressor has been damaged by this.

On a side note, I have had 2 other KP115s fail where the relay gets stuck on. These were being used to turn a TV off and the max wattage was 60W. Going by the information here, tp-link seems to have cheaped out on the capacitors and relays and as a result the products have been made dangerous.

I am not really sure how to proceed, I have ~15 of these tracking stats through home assistant and its not great if they are not safe to use.

  @GordonFreeman 

My Tapo plugs are Model P110 and I have 11. The oldest one died a few days ago and was 5 months old. I have recently read that maybe about 1 in 4 P110 plugs will die in a year or two (making a rapid clicking noise). This is rather a worry. I think Tapo needs to recall all of them and replace with a better designed model.