The backlight issue you are experiencing on your 2020 13" MacBook Pro is likely related to a hardware problem with the display. The cause of this issue is often due to a faulty backlight module or uneven backlight distribution, resulting in light and dark areas along the bottom of the screen.
The link you provided refers to a similar backlight issue with the 13" MacBook Pro models from 2016, and Apple had initiated a program to address that specific problem. However, if you are experiencing a similar issue with your 2020 MacBook Pro, and it is still covered under warranty or AppleCare, you should reach out to Apple Support or visit an Apple Authorized Service Provider for assistance.
Here are some steps you can take:
1. Check Warranty Status: Determine if your MacBook Pro is still under warranty or covered by AppleCare. If it is, Apple may provide repair or replacement services free of charge.
2. Contact Apple Support: Reach out to Apple Support via phone, chat, or in-person appointment to explain the issue. They may be able to diagnose the problem remotely and guide you through potential solutions.
3. Visit an Authorized Service Provider: If your MacBook Pro is no longer covered by warranty, consider visiting an Apple Authorized Service Provider. They can diagnose the issue and provide repair options, though it may come with a cost.
4. Avoid DIY Fixes: Attempting to fix the backlight issue yourself is not recommended, as it involves delicate components and specialized knowledge. Unauthorized repairs can void your warranty and potentially cause more harm to your MacBook Pro.
In cases where the backlight issue is widespread and identified as a manufacturing defect, Apple may issue an extended repair program similar to what they did for the 13" MacBook Pro models from 2016. However, without an official program in place for the 2020 models, it's best to consult with Apple Support or an authorized service provider for assistance.
Always ensure you have a backup of your important data before sending your MacBook Pro for repair, as some repair processes might involve data loss or drive replacement.