Hi folks have had my PP50 for about a year and a half now and it has performed flawlessly . It just acted for the 1st time . my problem is with the read out . when I dial up or down the read out will go from min amps to about 22 and then read 49 . Have not had time to see if the power actually increases or decreases while cutting or if it is just a defective read out .. Is there some way I can check the read out and repair myself or is it a more in depth repair .