Lucas Posted March 12 Share Posted March 12 Dear all, I have a Shelly 2.5 device, that when functioning is making a sparkling / cracking sound on neutral a couple of times a second, creating a visible flash. Weirdly, the device is functioning properly. I attached a video of the issue. Obviously, I disconnected the device for now. Here is a bit of background information and things I've tried: The device was working without any sparks in my previous home The device is functioning properly. I opened the cased and there is no visible damage I live in The Netherlands (230V AC) in a newly built house (2023) with solar panels The problem persists even without any connections to the O and SW ports. Earlier, I connected 2 60W TL lights in parallel The problem persists after replacing the L and N wires A Shelly 1L in the same location is working perfectly (without a N connection) There are no other electrical issues in the house. The fuses are still up What on earth could this be? Online I read that a sparkling neutral can be caused by a short circuit from live to ground, but Shelly has no ground connection. I really hope someone can be of any help! All the best, Lucas 20240225_171628.mp4 Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
Lucas Posted March 12 Author Share Posted March 12 Follow Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
Members thgoebel Posted March 12 Members Share Posted March 12 Most likely, the solder junction between the circuit board and the screw-type terminal is broken. This happens if too much torque was applied to make the connection. This issue may be repaired: Desoldering and reworking the pin of the terminal will be sufficient. And be aware not to apply excessive torque… Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
Lucas Posted March 27 Author Share Posted March 27 Dear thgoebel, Many thanks for your reaction and apologies for the late response - it took me a while to gather the right materials. I did as you suggested, but it turns out I'm quite bad at soldering and after reconnecting to power, my house's fuse blew and I think I'm giving up on this device. Quote Translate Revert translation? English (American) Finnish French German Italian Portuguese (European) Spanish Link to comment Share on other sites More sharing options...
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