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摘要: 测量显像管R阴极电压基本等同于视放电压(80V),为79V;测暗平衡控制IC102(LM2480NA)R输出⑧脚电压也为78V,其R基色输入①脚电压比B、G基色输入脚偏低,造成R驱动处于截止状态。 检查IC102①脚与三基色前置放大IC101(LM1236)的RCT⒁脚之间的元件,RR04(1K)、CR02(104)均无异常。判断为IC101损坏,换新LM1236后,
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型号 | 厂商 | 价格 |
---|---|---|
EPCOS | 爱普科斯 | / |
STM32F103RCT6 | ST | ¥461.23 |
STM32F103C8T6 | ST | ¥84 |
STM32F103VET6 | ST | ¥426.57 |
STM32F103RET6 | ST | ¥780.82 |
STM8S003F3P6 | ST | ¥10.62 |
STM32F103VCT6 | ST | ¥275.84 |
STM32F103CBT6 | ST | ¥130.66 |
STM32F030C8T6 | ST | ¥18.11 |
N76E003AT20 | NUVOTON | ¥9.67 |