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LED液晶屏单元板的故障应该如何进行维修
发表时间: 2020年01月04日   来源:澳门正规平台网址原创 点击:
来源:澳门正规平台网址原创 点击:

  杭州LED液晶屏是一种目前比较流行的播放设备,与一体机设备不同的是LED显示屏的屏幕是由单元板构成。因此大家在进行使用的时候一定要特别注意LED显示屏单元板的故障维修,下面就让杭州开享智能科技为你简单先容下。

  Hangzhou LED LCD screen is a popular playing device at present. Different from the all-in-one device, the screen of LED screen is composed of unit boards. Therefore, we must pay special attention to the maintenance of unit boards of LED screen when we use them

LED液晶屏单元板的故障应该如何进行维修

  一、整个led显示单元板不亮:检查电源是否连接到信号线;检查检查卡是否能识别接口;如果检查卡的红灯亮,则无法识别;检查灯板是否与检查卡的电源连接,或者灯板接口处的信号和接地之间是否存在短路,这使得接口无法识别。检查74HC245是否存在虚焊短路,以及245上相应的使能(EN)信号输入/输出引脚是否存在虚焊或与其他线路短路。

  1. The whole led display unit board is not bright: check whether the power supply is connected to the signal line; Check whether the card can recognize the interface; If the red light of the inspection card is on, it cannot be recognized; Check whether the lamp board is connected to the power supply of the check card, or whether there is a short circuit between the signal at the lamp board interface and the ground, which makes the interface unrecognizable. Check 74HC245 for a virtual welding short circuit and the corresponding enable (EN) signal input/output pin on 245 for a virtual welding or short circuit with other lines.

  二、点斜扫描时,常规隔行扫描不会使图像堆栈闪烁:检查245的A、B、C、D信号输入端口之间是否存在断路、虚焊或短路;检查对应于245的输出端子是短路、虚焊还是断线。检查信号甲、乙、丙、丁是否短路,或者信号是否对地短路。

  2. Conventional interlaced scanning will not make the image stack blink during point-oblique scanning: check whether there is A circuit break, virtual welding or short circuit between the A, B, C and D signal input ports of 245; Check whether the output terminal corresponding to 245 is short circuit, dummy or broken. Check whether the signal a, b, c or d is short-circuited, or whether the signal is short-circuited to the ground.

  三、一条或多条线路在完全亮时不亮:检查138和4953之间的线路是开路、虚焊还是短路。

  three. One or more lines are not bright when they are fully lit: check whether the lines between 138 and 4953 are open, phantom or short.

  四、在内部行扫描时,两行或更多行(通常是2的倍数和规则)一起点亮:检查信号A、B、C和D之间是否存在短路;检查4953输出是否与其他输出短路。

  Four, in the internal line scan, two or more lines (usually multiples of 2 and rules) are lit together: check whether there is A short circuit between signal A, B, C and D; Check whether the 4953 output is short-circuited with other outputs.

  五、当LED显示屏完全点亮时,有单点或多点(不规则)没有点亮:找出模块对应的控制引脚是否与银行短路;更换模块或单个灯。

  5. When the LED screen is fully lit, there are single or multiple points (irregular) that are not lit: find out whether the corresponding control pin of the module is short-circuited with the bank; Replace modules or individual lamps.

  以上就是杭州开享智能科技对杭州LED液晶屏单元板在故障时的维修建议,那么本文到这里也就结束了,如果你对杭州LED液晶屏感兴趣,或者想要购买相关产品。可以关注大家的网站(www.kxintelligent.com),感谢你的阅读!


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