黄河HC37—Ⅱ彩电无彩色(色同步选通脉冲)故障

• 作 者: 王明秋
• 出 处: 家电检修技术
• 发表日期: 1999年04期
• 关键词: 选通脉冲 HC37 色同步信号 检修过程 色度信号 行逆程脉冲 色饱和度 脚电压 行同步 虚焊

故障现象:有图像,有伴音,但无彩色。检修过程:(1)开机检查彩色通道部分有无虚焊,如图1所示。色饱和度控制是靠IC501(D7193P)(20)脚

Symptoms: There are images, accompanied by sound, but no color. Maintenance process: (1) boot check the color channel part of the Weld, as shown in Figure 1. Color saturation control is by IC501 (D7193P) (20) feet