I have had a refurbished Lulzbot Taz 6 from Matterhackers for around a year and a half and have never had any issues until the last couple weeks. As of lately, it refuses to home. I have made sure that the frame is squared, x-axis leveled, cleaned everything with alcohol and a scotch brite pad (pads and hotend). Everything is spotless and should be making good connections. It still refuses to work.
I have taken the bed off and put it back on. The printer is on a completely flat surface. I have ran the test command M420 S0, G28, G29 V4 before in the past to make sure that the corners are within range of each other, which they are. For the last couple weeks, when I try to run that command it just push down into a corner when it gets there.
So than I thought that it could be a bad hotend connection issue. While I got a new hotend, I also did an Archim 2 upgrade thinking that one of those would solve the issue. Sadly it still will not home.
Like before, it will home the x / y / z and but than will go to the first point and push down into the bed. It will go as far as to bend the bed a bit. To see if it was just a corner issue, I made another corner the home and it does the exact same thing. This makes me think that it is a physical bed issue since the same problem happens with a brand new board and hotend while everything is spotless and should be making a great connection.
Any ideas ?