论文部分内容阅读
一台创维25ND9000型彩电,图、声正常,但无彩色。首先考虑制式可能有误,于是用遥控器调出菜单,菜单显示制式项正常。拆开机盖,凭经验用一只4.43MHz晶振代换原机晶振。试机仍无彩色。该机色解码电路为LA76828N,由于没有相关资料,便参照LA76832图纸修理。而LA76832集成块与彩色有关的引脚为輧輳訛一脚,其中輳訛輧脚为彩色制式识别
Skyworth 25ND9000 type TV, figure, sound normal, but no color. First consider the system may be wrong, so use the remote control to bring up the menu, the menu shows the standard items normal. Open the lid, with experience using a 4.43MHz crystal instead of the original crystal. Test machine is still no color. The machine color decoding circuit LA76828N, because there is no relevant information, they will refer to LA76832 drawings to repair. The LA76832 integrated block and the color-related pins as a mistake, a mistake, which falsely accused of color-based identification