本刊05/12/P7所载“都是场块惹的祸”(简称<都文>)值得回味。它说的是检修 TCL-AT25E159彩电的“黑屏”故障时,提高加速极电压 Ug2后,荧屏呈现奇特光栅(参见图1所示),换“行变”FBT 等无济于事;断开场块的+14 V供电时,荧屏出现清晰的水平亮线。据此断定场块有故障,换新块后故障排除。上述的检修过程中虽然走了一些弯路,但并未徘徊, The magazine contained 05/12 / P7 “are all the tribes to blame” (referred to as “are”>) worth memorable. It refers to overhaul TCL-AT25E159 TV “black screen” failure, increase the acceleration voltage Ug2, the screen presents a strange grating (see Figure 1), for “line change” FBT and other helpless; 14 V power supply, the screen appears clear horizontal bright line. Accordingly, it is determined that the field block is faulty and the fault is cleared after replacing the new block. Although the above maintenance process took some detours, but did not wander,