Internal arcing

• <a href=" removed link ” target=”_blank” rel=”noopener”> removed link

Welcome, until you get your link sorted out, what are you working on? 

I am retired, now living in a remote part of North Peru, but originally trained as an electrical/electronic engineer 40 years ago, before diverting into computing. I purchased a Renogy 2000w inverter outside of Peru, and about a week after using it, I heard cracking noise at startup. On investigation found it was internally arcing from a toroidal transformer to a component on the pcb. The manufacturer kindly refunded me, but I have this lying around now, and curious to know what has happened and can it be repaired. I am aware just like valve radios there are high voltages inside, so I take precautions. I know nothing about inverters, but seems like a good project to find out.

I have a video, and can take other pictures later, when the forum allows

Nice! Use the link below for more info on uploading pictures and we can go from there.

Uploading Pictures to this Forum – General Chat – Mr Carlsons Lab Forum

https://youtube.com/shorts/awTlDyf21PI?si=pzGgUwz-J88zop4V

I did try to add plastic insulation between the toroid and the pcb, but did not stop it arcing

@perunut Not much to see in the video, as it is in “shorts“ format, I can neither zoom in nor slow it down.

Can you unsolder the toroidal to see where the arcing occurs?