长虹背投影彩电检修经验集锦(下)

• 作 者: 刘建华
• 出 处: 家电检修技术
• 发表日期: 2007年10期
• 关键词: 亮度信号 检修经验 彩色 故障排除 组件 投影 脚电压 字符 对地电阻 背投彩电

例44:DP5188型机,彩色正常,无亮度信号。图像彩色正常,但无亮度信号,怀疑是亮度通道有问题。亮度信号是从N001(49)脚输出经L816B送到变频

Example 44: DP5188 machine, color normal, no brightness signal. Image color normal, but no brightness signal, it is suspected that there is a problem with the brightness channel. The brightness signal is output from N001 (49) and sent to frequency converter via L816B