Chosen Solution

New batteries installed and still doesn’t turn on. Used the cable and didn’t work either.

olguilove, Brother PT-1280 discontinued model. If the laballer happens to be under warranty, use the warranty to return for repair/replacement/refund. Press and hold the power button 10 second’s, repeat 3 times to see if device powers up. Remove batteries and clean all the contacts with an ink eraser as it is slightly abrasive and removes tarnish and corrosion well or a Qtip dampened with 90%+ Isopropyl Alcohol. Blow dust debri from compartment and install good quality fresh batteries(installed correctly) and try labeller. Still no go, try using with the power supply. No go, dismantle the device and look for bad/loose connections,broken wires,loose/burnt components, check for bad/cracked solder joints, check power button if able for bad contacts. Clean all connections with Qtip dampened with with 90%+ Isopropyl Alcohol, reassemble and try. Still no go,internal board is probably bad. Find below, link to your manual. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. http://download.brother.com/welcome/docp

Make sure your batteries are oriented properly. I may have put them in backwards.