543/544 6MCC05 check & found Charging re ~~~~~ 543/544 6MCC05 check & found Charging resistor burn. 1543 (1X),2543 (2X) & 2544 (1X) To replace.  543/544 replaced K1/L1/L2 contact tips on all M cars. Replaced 1543 (1X),2543 (2X) & 2544 (1X) charging resistors. Conducted limited movement on each M car & all M cars able to register powering torque.  Kana 44081