Same thing happened to me after less than 4 months of using summa sclass 2 t!
And I had many troubles from the first day of use... not happy with this cutter and I wish I'd better purchase graphtec instead...
it was constantly freezing and required reboot to continue work almost every day...
alignment tape looks so cheap and was peeling from the day 1... contacted about that issue and was told that I'll receive a replacement for that tape, but received nothing...
And I told by Phil, that theyre not gonna refund me 100% money I paid even if there are any defects etc and they can even charge me more for not returning it in not brand new condition, even if I contacted them many times about different problem with that cutter and it was clear that it is not brand new and defective.....
Now, I have that sh*ty cutter that stopped working in the middle of busy week and I feel like I was fooled by all these promo posts here at this forum, that this is machine of legendary quality that will work forever etc etc...
In my case, forever ends after 4 months