EDIT: Solved. Not sure why the behaviour changed but instead of starting instantly the fan now only comes up after a while.
My A20t is just a few weeks old and the fan of the power unit stopped working. The printer itself is working ok, so just the fan is not getting (enough) juice. I checked the cabels and connectors of the fan but could not find any damage.
Before that issue it took only a second or two for it to start spinning, so I assume it is not dependend on PSU temperature. Now it's dead and I don't dare to use the printer without cooling the PSU.
Any hints?
EDIT: Solved. A20t PSU fan stopped working
Re: EDIT: Solved. A20t PSU fan stopped working
Hi,maybe the power fan is broken. You can contact the salesman to replace the power supply.
-Keep your mind and try to test it. 
-Everything will be fun！-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!
-Everything will be fun！-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!