影碟机的电源变压器种类很多,在维修中大多数都可以进行相互代换。用含有双绕组的代替含有双绕组或只有单绕组的比较方便,如用单绕组的代替双绕组的,则需要根据实际电路加以改动。本文介绍一个改动代换的实例,以供参考。一台SAST(先科)AL—P700K超级VCD机,按下电源开关无任何反映,经查是电源变压器初级回路开路。拆下变压器后检查,在初级绕组的层间夹有与之 DVD player power transformer many types, most of the maintenance can be replaced each other. It is more convenient to use double windings instead of double windings or only single windings. If single windings are used in place of double windings, it needs to be changed according to the actual circuit. This article describes an example of change substitution, for reference. A SAST (first Branch) AL-P700K super VCD machine, press the power switch without any reaction, the investigation is the power transformer primary circuit open. After removing the transformer check, with the primary winding between the layers