Led bulbs flicking when switch turned off

[ScoobyDoo]

I've just replaced a couple of my normal light switches with WiFi controlled touch sensitive switches.

The problem is when the switch is off a couple of my led bulbs, 2 out of 8 flicker and stay switched on.
If I replace one of the bulbs with an old GU10 non led then the problem is solved

The led bulbs are around 9yrs old

I believe I may need some sort of inline capacitor to solve the issue of the bulbs being on when the switch is off?
Can anyone confirm this and link me to which capacitor I may need?
Thanks

 

[ScoobyDoo]

Thanks for the information. I'll try one of those to see if it solves the issue.

 

[ScoobyDoo]

Did you have any luck? I've tried a couple of different zigbee-based dimmer switches and both have this issue. I returned the first thinking it was faulty but the manual in this suggest a bypass should help so I've just ordered the same one. Hoping it does the job!

It worked with one set of bulbs I had, stopped the flickering. The other set still has a slight flicker. My led bulbs are 10yrs old! Very first gen so it's probably down to the bulbs themselves