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一台三星 HE—518彩电,发生“三无”故障。经查,开关电源及行电路中多处元件损坏,其中电源厚膜电路 STR50103A 已击穿。该机随机图纸中,电源厚膜块标示为 STR5412(见图1),似乎可以代换 STR50103A。为了慎重起见,笔者测绘了电源部分的实际电路,发现只有很小的不同(已标于图1中)。另外,查阅资料得知,STR50103A 与STR5412虽然外形和引脚距离不同,但其内部电路结
A Samsung HE-518 color TV, occurred “three no ” fault. The investigation, the switching power supply and the circuit damage to many components, including power thick film circuit STR50103A breakdown. Random drawings of the machine, power thick film labeled STR5412 (see Figure 1), it seems that you can replace the STR50103A. For the sake of caution, I plotted the actual circuit of the power supply section and found only a small difference (labeled in Figure 1). In addition, access to information that, STR50103A and STR5412 although the shape and lead from different distances, but its internal circuit junction