一、灯管两头亮，中间暗，毛病在启辉器上．1．是启辉器电容击穿短路，一时无新的更换，可将电容拆去，暂用几日．2．是启辉器中的动静片连成一体，不再分离，必须弃之换新．二、正常供电，灯管不亮、启辉器是好的话，毛病是：1．灯管灯丝断了；2．灯管触头与灯脚触点接触不良 First, the two lights on the tube, the middle dark, the fault on the starter. 1. The starter capacitor breakdown short circuit, no new replacement, can remove the capacitor for a few days. 2. It is the dynamic and static film in the starter device that is no longer separated and must be replaced. Second, the normal power supply, the lamp is off, the starter is good, the problem is: 1. Lamp filament broken; 2. Poor contact between lamp contacts and lamp foot contacts