I have a heated bed problem that lasted for months. In the first few months of printing, the heated would stop heating mid print and cause a disaster of material clog in the nozzle. Now, the heated wont even raise its temperature. There is no error shown so im assuming the temperature sensor to the bed is fine. However, the heating element is missing. I can print on a cold bed but its better to fix it. I have done some investigations of my own and i found out that once i start to increase the bed temperature manually, the pcb board Q1 will light up in red. Is that normal? Is the problem at the heated bed end or pcb end or wire itself? Its difficult for me to conclude.