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Message: Please add me to the WeChat group for the Chinese electrical appliance industry (professional home appliance repair exchange group) with no users, no ads, and no irrelevant content. Strict group rules and dedicated management. If you are in the home appliance repair industry, you will be added to the group. We have 40 repair groups, including refrigeration appliance repair groups, TV repair groups, washing machine repair groups, mobile phone repair groups, computer repair groups, appliance sales groups, water purifier groups, appliance parts supplier groups, etc. Or long press the QR code to add the group owner's WeChat.
【Air Conditioning Repair Technology Teaching Group】
Has been created, purely a teaching group. All video lectures, each lesson has a physical demonstration. Instructor Yi Xiu will teach. The best choice for online education in air conditioning repair technology, from the basics of fixed-frequency air conditioning to variable frequency air conditioning repair knowledge, explained step by step. Let you master air conditioning repair skills in a short time. Teaching duration is one year. There will be five classes every week, and there will be some practical operation videos explained by Yi Xiu gradually. Interested parties contact the group owner. Limited spots, register quickly.
Vertical stripes appear on the screen (appear regardless of signal) Fault analysis· Based on the fault phenomenon, the fault range should be due to abnormal logic board to screen circuit, including both software and hardware. Fault repair: To accurately determine the faults in software and hardware, carefully observe the phenomenon of the screen in black screen state. Generally, there are two situations: …
Vertical stripes appear on the screen (appear regardless of signal)
Fault analysis· Based on the fault phenomenon, the fault range should be due to abnormal logic board to screen circuit, including both software and hardware.
Fault repair: To accurately determine the faults in software and hardware, carefully observe the phenomenon of the screen in black screen state. Generally, there are two situations: one is that the screen appears reddish or greenish when black, indicating a logic board fault or poor contact of the screen line; the other is that the screen is normal when black, indicating that the main program or screen parameters are incorrect. After observation, this fault belongs to the first category.
Following the principle of repairing from easy to difficult, gently touching the screen line causes the vertical stripes to disappear instantly, indicating poor contact or damage to the screen line. Re-seal and fix the screen line, and the screen returns to normal. After aging for a period of time, the screen reappears vertical stripes, indicating that the screen line is damaged, replace it with a new screen line, and after aging for a day, no problems occurred, fault eliminated.