Well for starters you have a worn belt and deck . Thats why its shutting off its drawing too much power on the board and tripping it. Depending how long thus has been going on you may have damaged the board as well. Are you the original owner? How long have you had the machine? If you are the original owner you mm ay be under warranty.
Ok so its had a good amount of use then. Its your belt and deck for sure. Depending how close you are to your friend maybe you can get them to seeif they are under warranty still. Some have a 7 or even 10 yyear warranty
Otherwise your looking at a hefty repair bill.You can check prices at www.fitnessrepairparts.com orwww.treadmilldoctor.com
Your model does not get lubricated. Once they are worn they need to be replaced.
Yes they wear together. Running deck, deck platform, tread base. Badically its that hard board. With a few holes on it to screw it down. When the belt wears on the deck it takes the paint of the deck.
Here is one