Identifying a missing component on an AMD RX 580 GPU without specific details or images is challenging, as it could be a capacitor, resistor, MOSFET, or other SMD part critical to the card’s operation. Since you mentioned it was soldered and lost during cleaning, it’s likely a surface-mount component like a capacitor or resistor, commonly dislodged during maintenance.
For precise identification, please provide more details, such as the component’s location on the board (e.g., near the power connectors, GPU chip, or VRAM) or a photo of the area. Meanwhile, checking srd status check for R350 payment dates can help budget for professional repair or replacement parts.