Hi all.
I am a newbie and I have been trying to repair a PCB. I am not trained in any related field to repair any circuitry and it is just me trying to learn how to do it myself. This equipment is a micro pipette (for biological lab work). The model is Eppendorf EasyPet EP4421.
I have attached pictures of the part of the board this component was attached to. The space labeled DR1. It connects to one of the poles of the power plug and to a diode D2. It appears to have four legs and I can se a winding on the underside with four wires connected one to each leg. It has no markings. The only visual characteristics I can make out are that it has blue semi-translucent shielding made of some kind of plastic, and that the core is made out of some shiny powder or pressed metal, I am not sure, but it doesn’t want to solder back in and when it has fallen off, the footprint on the PCB had tiny metal platings (flat) attached to the solder joints. I think those were the actual legs where those tiny wires came to.
It fell off when I was going through component with a multimeter for initial check. I tried to use ai chatbots but they are clueless and hallucinate like crazy and could not help at all. After some googling and going through some pictures of all possible components, I think it looks more like an inductor, but I am not sure.
Thank you in advance!
