The LG Gram 17Z90N is a lightweight yet powerful laptop designed for productivity. However, over time, components like the ribbon cable may wear out or become damaged, affecting the display, keyboard, or touchpad.
A ribbon cable is a thin, flat connector that transmits signals between different laptop parts. These cables are delicate and can easily get damaged due to bending, improper handling, or normal wear.
Replacing a ribbon cable is essential when experiencing issues like an unresponsive keyboard, display glitches, or intermittent touchpad failures. Proper replacement ensures the laptop functions smoothly without requiring a costly repair.
In this guide, we’ll walk through the LG Gram 17Z90N ribbon cable replacement process step by step. If done carefully, this can restore your laptop’s functionality without needing professional repair services.
Tools and Precautions
Essential Tools
Before beginning, having the right tools will make the process easier and prevent accidental damage.
- Precision Screwdriver Set – Needed to remove the laptop’s back panel screws.
- Plastic Pry Tool – Helps to open the case without scratching or damaging it.
- Tweezers – Useful for handling small components and cables.
- Anti-Static Wrist Strap – Prevents static electricity from damaging internal components.
Precautions to Follow
Handling internal laptop components requires caution. Always take the following precautions to avoid damage:
- Turn Off the Laptop – Completely shut it down and unplug the power adapter.
- Work on a Non-Conductive Surface – A wooden or plastic table is best for preventing static discharge.
- Be Gentle with the Ribbon Cable – These cables are fragile, and excessive force can tear them.
- Keep Track of Screws – Using a magnetic tray or small container prevents screws from getting lost.
Common Causes of Ribbon Cable Failure
Ribbon cables can become faulty due to various reasons. Some of the most common causes include:
|
Cause of Damage |
Description |
|
Frequent Bending |
Repeated opening and closing of the laptop lid stresses the ribbon cable. |
|
Poor Connection |
A loose or improperly connected cable can cause intermittent failures. |
|
Aging and Wear |
Over time, ribbon cables may deteriorate and lose conductivity. |
|
Physical Damage |
Mishandling during repairs can tear or puncture the cable. |
By understanding these causes, users can take preventive measures to extend the lifespan of their LG Gram 17Z90N ribbon cable.
Accessing the Ribbon Cable
Opening the LG Gram 17Z90N requires patience and precision. The first step is removing the laptop’s back panel.
Carefully unscrew the bottom panel using a precision screwdriver. Make sure to keep the screws organized, as they may be of different sizes.
Once the screws are removed, gently pry open the panel using a plastic pry tool. Start from one corner and slowly work your way around to prevent breaking any plastic clips.
After removing the panel, locate the ribbon cable that needs replacement. It may be connected to the keyboard, display, or touchpad. Identify the locking mechanism that secures the cable in place.
Understanding the placement of the ribbon cable before removal helps avoid accidental damage. Take a picture of the internal setup for reference during reassembly.
Removing the Faulty Ribbon Cable
Most ribbon cables in the LG Gram 17Z90N are secured with a small locking tab or latch. Carefully lift or slide this tab to release the cable.
Once the locking mechanism is open, gently pull the ribbon cable out of the connector. Do not force it, as excessive pressure may damage the connector.
If the cable is stuck, check for adhesive or clips holding it down. Using tweezers can help remove it smoothly.
Before discarding the old cable, compare it with the replacement to ensure they are identical. Differences in length, width, or connector type can prevent proper installation.
Handling the ribbon cable delicately is crucial. Even a small crease or bend can cause connectivity issues, leading to further malfunctions.
Installing the New Ribbon Cable
Align the new ribbon cable properly before inserting it into the connector. Make sure the metal contacts face the correct direction.
Gently slide the cable into the port without applying too much force. If resistance is felt, double-check the alignment to avoid damaging the connector.
Once the cable is in place, secure it by closing the locking tab. A firm connection is necessary to ensure the signal flows correctly between the components.
Before reassembling the laptop, test the cable by lightly pressing the power button. If the display or keyboard responds correctly, the connection is secure.
Taking time to properly insert and secure the LG Gram 17Z90N ribbon cable ensures long-term performance and avoids future connection issues.
Reassembling and Testing
After the ribbon cable is installed, reattach the back panel and secure all screws. Be sure to use the correct screws for each location.
Reconnect the battery and press the power button to test the laptop. If the ribbon cable was replaced correctly, the display, keyboard, or touchpad should function normally.
If the laptop does not respond, check the ribbon cable connections again. Sometimes, cables may not be fully inserted, causing an incomplete circuit.
Once everything is working properly, replace any rubber feet or stickers removed during disassembly. This final step ensures the laptop looks as good as new.
Proper reassembly is just as important as installation. Rushing this step can lead to loose connections, requiring additional repairs later.
Troubleshooting Common Issues
If the LG Gram 17Z90N ribbon cable replacement does not resolve the issue, check for other potential problems.
- Display or Keyboard Not Responding? Reopen the laptop and confirm the ribbon cable is inserted correctly and fully secured.
- Laptop Not Turning On? Make sure the battery is properly connected and charged.
- Flickering Screen or Intermittent Touchpad? The ribbon cable might be loose, or there could be damage to the motherboard connector.
If troubleshooting does not fix the problem, the issue may lie in other internal components. Seeking professional repair services may be necessary.
Understanding common errors helps users quickly resolve issues without unnecessary disassembly or additional part replacements.
Conclusion
Replacing the LG Gram 17Z90N ribbon cable replacement is a straightforward process if done carefully. With the right tools and precautions, users can restore their laptop’s functionality without expensive repairs.
Taking time to properly access, remove, and install the ribbon cable ensures a successful replacement. Handling delicate components with care is essential to avoid further damage.
Following proper reassembly steps and troubleshooting common issues can help resolve most problems. Testing the laptop before closing the case prevents unnecessary rework.
If DIY repair is unsuccessful, consulting a professional technician is the best option. A skilled repair specialist can diagnose and fix hardware-related issues beyond the ribbon cable.
With careful handling and proper installation, the LG Gram 17Z90N ribbon cable replacement can be replaced efficiently, extending the laptop’s lifespan and maintaining optimal performance.
FAQs
1. How do I know if my LG Gram 17Z90N ribbon cable needs replacement?
If your keyboard, display, or touchpad is unresponsive, glitching, or working intermittently, the ribbon cable may be faulty.
2. Can I replace the ribbon cable without professional help?
Yes, with proper tools and careful handling, you can replace it yourself by following step-by-step disassembly and installation instructions.
3. What happens if I improperly insert the new ribbon cable?
If the cable is not properly inserted or locked, the connected component (display, keyboard, etc.) may not function correctly or may not work at all.
4. Where can I buy a replacement ribbon cable for the LG Gram 17Z90N?
You can find replacement cables on e-commerce platforms like Amazon, eBay, or specialized laptop parts stores online.
5. Does replacing the ribbon cable void the laptop’s warranty?
Yes, self-repair may void the manufacturer’s warranty, so check your warranty terms before proceeding with the replacement.
