Had a Samsung Laser printer for Years good colour & fast, then the trouble started lots of blinking lights, find hack on line using a 10K resistor, fixed for a while, repeat as needed. Then lights start again hack again lights blink differently look up error code, replace error code item(expensive) lights blink in a different order can't stop it. Need to print off buy another printer (Epson) put printer in to fix later pile (or mountain)