FHD mod done.
Actually got it up and running since last week.
The display panel, AUO B140HAN1.3 ordered from Shopee. Waited about 10 days and delivered by Shopee Express.
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Chrome at 1920x1080. Not too small and readable. So much clearer than the stock HD display panel.
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Watching anime in FHD resolution.
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I will repurpose the old panel as an external display later on.
Another issue with older Thinkpads is the LCD chassis is slightly warped and on some panel, there will be some backlight bleed. Loosening the LCD support screws and add some foam tape solved the problem.
What's next?
1. USB-C power port?
2. External 4G antenna?
3. For some reason, I cannot use any HDD in the DVD bay. Every adapter I bought won't even detect the HDD. 1 of the adapter can detect but if the laptop goes to sleep, the HDD disappears. Weirdness?