Sanyo projector began making a humming noise when running

No a noise filter is a different kettle of fish. That stops electrical interference noise from affecting your television, radios and electrical devices.

The most likely source of the hum is the start capacitor on the motor, or the motor itself.

https://www.google.com/search?q=samsung+dishwasher+start+capacitor

This has a different idea

Humming or Grinding If your Samsung dishwasher makes noise when starting that sounds like a low hum, it's part of normal function. The motor makes this sound as it operates throughout the wash cycle. However, a dishwasher making loud humming noise or grinding sounds could mean that debris is caught in the drain pump.

Samsung Dishwasher Making Noise? Follow These Tips

This says the drain pump, but the drain pump only runs to empty out so it wouldn't do it all the time.

https://kitchenbuds.com/dishwasher-guides/samsung-dishwasher-making-grinding-noise/

Lots of other ideas and videos

https://www.google.com/search?q=samsung+dishwasher+humming

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How to Troubleshoot Sanyo Projectors (13 Steps) ' eHow

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Sanyo makes dozens of models of multimedia projectors designed for use in different settings, but there are a handful of common problems that come up, mostly ...

Sanyo PLV Z700 Owner Manual

If you need more go to Sanyo

Check for broken engine and transmission mounts.

hi it could be a bad neutral connection on your plug or inside on your high voltage transformer check the plug for burning and try plugging it in a different socket

To get the humming noise to stop when listening to your iPod while it's docked, you have to use the projector feature AND keep the backlight on on your iPod. My projector stopped working and I'm trying to figure out how to get it going again (replace the bulb?) so I can stop the humming noise again. The unit is not being made anymore, probably because of this problem.

even if a fan spins it still can be noisy.clean all fans (i use a tooth brush).i also buy air in a can..(poundshop sells them).and spray them to clear any dust.when you have done that start the projector and see if is sorted...

Are you sure its a fan, dust out the fans.
If its not the fans you may have a power supply going out and causing some induction hum in the unit. Sometimes, but rarely, through the built in speaker.

there is probly a short in the wiring some were

it is the color wheel i have a similar problem and am looking for the part, the color wheel is a small electric motor that spins at a high speed and it can go bad. which will lead to the horrible squeel/hum/buzz.