Print platform continues to heat up automatically-UP300

The platform automatically heats up after initialization or printing, the problem maybe caused by following,

1. Platform FFC cable short circuit

• Turn off the power, remove the heating base plate, check if the platform FFC cable is damaged, and if the platform FFC cable of the heating base plate is broken or loose. If yes, replace the FFC cable / re-plug

2. Heating plate damaged  

• Turn off the power, remove the heating  plate, check if the heating chip on the plate is damaged, repair or replace it
• Turn off the power and replace the heating base plate

3. Mainboard damaged

• Turn off the power and replace the mainboard