STR—50103A是串联型开关电源厚膜集成电路,上海牌Z651—2A型彩电开关电源应用了此厚膜电路。当STR—50103A损坏后,因其价格高且不易购买,所以一般要考虑局部代换或整体代换。而大多数电源厚膜电路损坏都是内部开关管击穿,所以首先要选择局部代换。下面介绍STR—50103A的具体局部代换方法。 STR-50103A is a series of thick-film switching power supply IC, Shanghai Z651-2A type color TV switching power supply using the thick film circuit. When STR-50103A damage, because of its high price and not easy to buy, so generally consider the partial substitution or overall substitution. Most of the power thick film circuit damage is the internal switch breakdown, so we must first select the local substitution. The following describes the STR-50103A specific local substitution method.