Hp laserjet printer 2840

Most surge protectors only protect up to a certain limit. If you had a large surge, then i would say the power board in your printer has been zapped. I would suggest you purchase a new or second hand printer to replace yours, unless your willing to pay more than the printer is worth to fix it.
Another thought is that the problem could be the actual power point it was plugged into. Try plugging it in to another power outlet that you know is working.