My Samsung dishwasher model # DMR77LHS makes this terrible grinding noise when it is initially turned on & then 2-3 more times through the cleaning process.

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

..

Make sure power is present to the dishwasher from the wall plug, then if that is ok you most likely need to replace the control panel assembly. Cost about $200 US installed on average

It sounds like the main circulation water pump bearings are damaged.

The orange lead goes on the connector on the edge of the pump. The white lead goes on the connector toward the middle.

Hello, randmanx

I was trying to help you out here. I was going back to some customers that asked questions in the past and it appeared that no one answered them, so I thought I would take some of my personal time to see if I can help. Even though this site may not have your exact model or brand, This link will help you tons. Here is a link to about everything you want to know about your dishwasher, from repair to trouble shooting it,pictures, video's. Just scroll around and you will see tons of information to almost any question you might have on your dishwasher. If you go to this link and click around, I am sure you will find out so much about your dishwasher, you will know more that the company that made it. Here Is the link for you to click on>>

http://home.howstuffworks.com/dishwasher.htm


Please if this helped you at all, if you can find the time to rate my help and some kind words written would be appreciated for my free help , I would appreciate it. Here is also my direct link to my own pages of other areas of my expertise for other problems you might have in Automotive,Appliance, and Electronics. Drop In anytime for my help. Thanks,Mike

http://beta.fixya.com/users/mc1bean

I have the same problem with my dmr77. My coffee pot ran over and evidently ran down behind the Samsung dishwasher. It thinks that it is leaking. How do you reset it?

Hi, whenever a fuse of that magnitude, or any fuse really, Blows, you should never just replace it, as to have any device, blow a fuse, trip a breaker, requires a major fault, they do NOT blow spontaneously ever. So you have had a major short circuit inside your machine, at some stage, usually this is in, the main Controller Board, most likely the bridge rectifier has gone short circuit, or a capacitor, But it could be anything even the motor?anything like this then will blow the fuse. The reason the fuse blow is to prevent a fire and explosion or both, as if an unlimited amount of current could be drawn, it would be catastrophic, so a fuse blows to disconnect the power. The Cause of this MUST be discovered before one ever attempts to replace the fuse. Luckily, it seems in this case the fault has blown an open circuit on the main Board, and this has prevented any further trouble.
Really after such an event as this one should engage the services of a professional, as anyone untrained may mis something that later on my even prove fatal. Get this unit looked at by a professional service person, ask for a 'Quote" if concerned about costings, then you can make an informed decision as to what to do.

Your support site is below,
http://www.samsung.com/us/support/detail/supportPrdDetail.do?menu=SP06&prd_ia_cd=&prd_mdl_cd=&prd_mdl_name=DMR77LHS

hti had athe same problem, and the fuse fixed it. it turns on now,

you can get to the fuse casing, small tube about 1.5 inches , black, by flowing the electrical line to the, inside , or the under carriage, on the side of the bottom of the unit.
15 amp 250 volt at radio shack.

Check the upper basket mounts. I've noticed mine has been losing tabs. I've got an order in to get this fixed. Also had a part break in the back of the dishwasher that acts as a guide for the upper basket, it's part of the spray assembly. Hope this helps

Wash out the drain and filter.