Who do I contact in Support? I Have the W type see photo
I have sent a message through the UP Studio
Have not heard anything back from support yet, thought I would just purchase a new screen as I just cant rely on the printer to finish a print I want for the end of the month. tried to purchase from the tiertime shop and it says it can’t ship to New Zealand and to use local reseller - local reseller does not stock the part on their site!
Support sent out a new Touchscreen.
This new Touchscreen arrived this week, fitted it this evening…
1st thing I notice is it is much faster to load than the old one!
Calibrated OK
Running a small test print now - will slowly build up to the problem prints
An hour ago I updated the touchscreen to 1.5.14W.
Started printing a part. after one layer: Internal usb connection error The main thread is blocked.
For a very long time I avoided to upgrade the touchscreen because of such problems… the printer worked fine…
Support were good, they sent me a new Touchscreen. Like I stated above the first thing I noticed was that it ran a whole lot faster.
I have done one 40 hour print successfully and have another 40 hour job in the printer now.
Once that is done i will do something I know would have failed on the old TouchScreen.
Sadly my printer stopped to work entirely because of usb / main thread errors. 
But tiertime support works even on Chinas new year… they are sending me a new touchscreen pcb! This is great support.
Can’t wait to test updated printer.
Ok I have increased prints until the last one 680gm 146 hours to print. 100% finished no error -YAY!!
I am happy enough to now go and buy a second printer!
Same story here… had a lot of thread blocks on the old touchscreen hardware, new screen sorted that out, they sent it out at no cost to me.
Nice one.
Not so much luck on the second printer… It arrived last night - same old screen.
I’ll have to run another series of tests and see if it has the fatal error!!
Thank you Jason, that will save a weeks testing
Wow how about that a week of testing and sitting idle between jobs the error occurs.
Fortunately the kind people at Tiertime have sent out a new touch screen for my second printer. Can’t wait to receive and fit it!
2nd Screen has arrived and is installed. so far so good - no errors
just had this happen on new screen, with upstudio2.
This constantly happens with new upstudio 3.
Machine also sometimes pauses prints.
DO NOT BUY TIERTIME 3D PRINTERS!
Had enough of this BS!! So many half fixes… non responsive support, unfixed bugs. Glitches in systems. IM DONE. DO NOT BUY TIERTIME. Just oh my god… avoid, at all cost!!!
Just thought I would update, have not had the error again to date.