resolve the rattle coming from the PSU

thingiverse

This part (noise reducer psu.stl) should be applied directly on top of the heat sink shown in the picture. If this noise reducer psu.stl is the source of the rattle, you can test it by gently pressing the heat sink with a plastic part such as a piece of filament. If the rattle disappears, then you've identified the problem. When testing, press the heat sink lightly until it touches the filament, and if the noise stops, insert the noise reducer psu.stl through the vent opening until it makes contact with the heat sink without applying too much pressure. The smaller part (noise reductor psu traseira.stl) can be used to press the plastic sheet on the backside of the PSU against the controller board. Be extremely cautious when handling the PSU, as it can cause damage or injury. I assume no responsibility for any harm that may result from using this information.