To be honest no it is not repaired as yet, but let me give you some back ground.
I was repairing and maintaining a 3D Printer farm for a family member, I was getting paid so that was good.
The TAZ 6 was one that resented the issue that menu items would not scroll, but did select.
So at the time, over 12 months ago now, I tested the rotary encoder switch, and it appeared to work but we got a new one anyway.
After fitting the newly purchased encoder, the problem was still there. So now it could only be the controller board, electronic plugs, and/or the cabling.
After replacing the cables and ensure the orientation of the cables where correct, I fully tested all connections and circuit board traces all the way to the CPU.
I then probed the CPU to test the clock pulse inputs that the CPU should be receiving, they all tested fine.
When I connected the printer to Cura via the USB, all worked perfectly, printed fine, tested fine, homed fine, everything worked except, there was no scrolling through the printer’s screen menu, via the rotary encoder.
So as the printer was less then 12 months old, I contact the manufacturer and they was so kind to agree that the only thing that it could not be was the controller board. So they shipped the board to the person that has the printer farm.
They contacted me via text and said they has received the replacement board, and was sending it to my home, straight away.
That was back on the 6th September 2019. No board arrived, so I still have the printer, just sitter here collecting dust, as I have enough other printers of my own, not Lolzbot to play with!
As these times are not the best, I will leave it until after we can get out and about freely, to contact this family member, and ask what they want done with this print??
Sorry I could not be more help with your printer. But the one I have 100% needs the new controller board from Lolzbot!
Lolzbot were great with helping me at the time, and they did send a new board, it is just my end that let the team down, in getting this printer back up and running, correctly!
Happy printer, or best of luck in getting your one up and running!