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sticking machine, polarizer tearing machine, COF consumables
Fault phenomenon: slow response
Fault analysis; The common manifestations of slow response are as follows.
1. Slow response speed, it will only display after a few minutes of startup.
2. The four corners of the screen turn black and feel like they are leaking liquid.
3. No characters or elongated or trailing characters.
4. The image shakes up and down.
5. The screen appears dim and lacks brightness, etc. The main reason for this malfunction is
① Electrode open circuit. ② The side panel is damaged. ③ C0F damage (liquid ingress corrosion). When encountering such a malfunction
1. You should first check if the X1 power supply part has corroded due to liquid ingress. If so, replace X1 and repair it with a flying wire
2. Is there a circuit break between X1 and Y1, and is there a repair of the flying wire? (mostly B0E Huaxing Optoelectronics AU0 Qimei, Panda)
3. Check if the comparison between the edge board voltage and Y1 voltage is normal,
with a focus on testing; VGH、VGL、VDD。 Is it normal? If it is normal, if Y1 is not normal,
then fly wire treatment. If both side plates Y1 are not normal, it is judged that the side plate
is damaged and can be repaired or replaced。
Guangzhou weicai electronic technology Co., Ltd.
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