DavecUK I’m sure the light flashes on and off until it’s ready (correct temp for brewing).
I think the light that flashes on and off until ready is the temp light (on the left), but the issue in the videos is with the water light indicator (should be solid when there is water in the tank, or flash on and off when there isn’t. In the videos it’s flickering or off even when there is water in the machine and it’s otherwise working correctly).
eduk Appears just to be a problem with the light, although the light itself does not appear faulty.
You mean that the LED bulb doesn’t seem faulty, because when you swapped the two LED bulbs, the problem stayed in the water indicator light (on the right), right?
If the above is correct, then maybe the following resources about the water sensor system will have something useful:
Failing that, I would try to send a video of the flickering light to Lelit. My impression is that they were quite responsive and helpful when contacted. Would be great to hear if you managed to find a solution.