How to quiet down a noisy inverter fan?
Hello, I have a cheap ebay PSW 300 watt inverter. But it works great for my needs. It has a cooling fan that only comes on when demand warrants it. But the fan has become really noisy, sounds like...
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If the fan is anything like the fans in computer equipment, there may be a rubber plug on the back of the motor housing. I have re-lubed these in two ways: 1) remove the plug and drop in the smallest amount of 3-in-1 oil possible (often with a toothpick), or 2) if the plug isn't removable, use a syringe and needle (I'm a retired Army nurse) to inject a minute amount of 3-in-1 or sewing machine oil. It's easy to over-lube these motors. The alternative is to find a replacement fan (of better quality) by matching the size, voltage, and CFM specs.
