LENOVO IDEAPAD SLIM 3 | NO BACKLIGHT PROBLEM | 100% SOLVED

RKLC Repair Knowledge

6 Nov 202107:42

Summary

TLDRThe video script discusses a technical issue with a Lenovo laptop, where the display input is not visible on the screen despite being received by the channel. The narrator demonstrates the problem and proceeds to troubleshoot by opening the laptop, disconnecting the battery, and inspecting the display connections. They check for proper voltage supply and identify potential issues with the display cable and capacitor. The video aims to guide viewers through the process of diagnosing and potentially repairing the laptop's display problem.

Takeaways

😕 The Lenovo laptop has a display issue where the channel comes in but doesn't appear on the screen.
🔍 Upon close inspection, the screen appears dimmer, indicating a potential backlight issue.
🛠 The user is attempting to resolve the problem by opening the laptop and disconnecting the battery for further inspection.
🔌 There is a visible factory defect in the laptop, which might be related to the display issue.
💻 The display cable appears to be damaged, which could be the cause of the display problem.
🔋 The laptop's power supply is checked to ensure it's providing the correct voltage to the screen.
🔍 The script mentions checking for any loose connections or damaged components that could affect the display.
🔌 The user discusses the possibility of a faulty backlight inverter, which is crucial for screen illumination.
🛠 The repair process involves checking and potentially replacing the damaged display cable and inverter.
🔄 The script describes a methodical approach to troubleshooting, including checking for proper voltage supply and connections.
👨‍🔧 The user mentions that despite replacing the screen, the problem persists, indicating a need for further diagnosis.

Q & A

What is the main issue with the Lenovo laptop mentioned in the script?
-The main issue is that the display is not working properly. The channels are coming on, but the screen is dimmed and not showing the content clearly.
What is the first step the technician takes to troubleshoot the laptop?
-The first step is to open the laptop and disconnect the battery to ensure there is no power supply while troubleshooting.
What does the technician observe about the display's backside connection?
-The technician observes that the display's backside connection appears to be damaged, indicating a possible factory defect.
What is the purpose of checking the 3.3 volts supply to the screen?
-The purpose is to ensure that the screen is receiving the correct voltage supply, which is necessary for its proper functioning.
What is the significance of the 0.2 ohms resistance mentioned in the script?
-The 0.2 ohms resistance is being checked to ensure that the correct resistance is present in the circuit, which is crucial for the proper functioning of the display.
What does the technician do after noticing the screen's dimness?
-The technician decides to perform a thorough check of the screen's connections and the components related to the display function.
What is the possible reason for the screen's backlight not working properly?
-The possible reason could be a damaged or improperly connected backlight circuit, or a problem with the voltage supply to the backlight.
What does the technician suggest as a potential solution to the problem?
-The technician suggests that the issue might be resolved by repairing or replacing the damaged components related to the display.
What is the role of the 'MP f-35' mentioned in the script?
-The 'MP f-35' seems to be a reference to a specific part or model number, possibly related to the display or a component within the laptop.
What does the technician conclude about the laptop's condition after the checks?
-The technician concludes that there is a problem with the laptop's display connections or components, which needs to be addressed to fix the issue.
What is the final step the technician takes in the script?
-The final step is to reassemble the laptop after the checks and tests, and to confirm whether the issue has been resolved.