After turning on the printer, there is no response and the printer is not powered on at all. What is the reason?
The printer has an over-current protection device, which will play a role in current protection when the current is too large. In this case, the fuse of the printer may be burned out.
Open the case and find the fuse in the internal power supply of the printer (the internal power supply can be found near the external power supply of the printer) to see if it is dark, or use a multimeter to measure whether it is burnt out. If it burns out, just replace it with a fuse that basically matches (the fuse is marked with rated current).