While working in the technical area, I accidentally touched the Cerbo MK2 power-in cable. Since the connector is known for being a bit loose, it disconnected quite easily.
When I tried to plug it back in, I mistakenly inserted it into the Relay 2 output socket instead of the Power input socket (it slid in very easily, without any effort). As a result, the middle pin of Relay 2 turned black, so it seems it got fried.
Is there still a chance to get the Cerbo powered on again? Maybe by soldering a bridge on the relay part? I’m not really using it anyway.
Also, do any of you see this as a design flaw? It could have been easily avoided if the relays had a different type of socket that wouldn’t allow the power-in plug to fit—or at least if there had been some sort of protective cover.
Yes, I also checked the cable using a multimeter. The power supply works just fine—it reads 48V. However, I’m not willing to open up the Cerbo’s housing, since I’m not very skilled in repairs, especially when it comes to SMD components.
The relays have potential free contacts so there is no electrical connection between the relay contacts and the internal electronics of the Cerbo. If you can no longer power up the Cerbo, have you checked the contacts in the power supply terminal.block have not been oxidised / burnt away so you are not getting power to the Cerbo. If power is getting into the Cerbo and it does not start then the short within the relay has caused collateral damage.
Nearly impossible that you have blown up the cerbo by connecting power to the relay, worst case it would short your power supply and blown the fuse, or destroyed the relay contacts, or as stated damage the power connector on the cable…