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Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

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Electronics Repair School
ASUS ZenBook Pro Duo UX581GV and ASUS VivoBook X1505ZA Board Repair - Fixing Dead Laptops

Master motherboard repair techniques by diagnosing and fixing two dead ASUS laptops through hands-on troubleshooting and component-level repairs.
- YouTube
- 14 minutes
- Self-Paced
- Free Video
Electronics Repair School
HP ENVY X360 2-in-1 Laptop Not Charging - Motherboard Repair and Diagnostic Shortcuts

Master motherboard repair techniques for HP ENVY X360 2-in-1 laptops with charging issues through efficient diagnostic shortcuts and hands-on troubleshooting methods.
- YouTube
- 25 minutes
- Self-Paced
- Free Video
Why NAND Flash Breaks Down - Tutorial

Explains why NAND flash cells misread data, how faults can be mitigated, and how failure mechanisms may evolve.
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NDC Conferences
Sockets, Sparks, and Magic Smoke

A tour of how electricity powers our digital society, from charging phones and storing data to the physical limits of processors and power grids.
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Alienware Laptop Battery Repair - Dell Gaming Laptop Not Charging

Diagnose and repair a Dell Alienware laptop battery that is not charging by checking battery balance, fuses, and current.
- YouTube
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Sony Laptop Hinge Repair

A case study of a Sony laptop hinge repair, including the repair story, business context, and customer-trust issues.
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Write a Single Library to Handle All Input Devices, It'll Be Easy They Said

A tour of libinput’s design tradeoffs in building one userspace input stack for mice, touchpads, tablets, and touchscreens.
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Asus Vivobook X6502H Repair - Troubleshooting a Dead, Non-Charging Laptop

Troubleshoot and repair a dead, non-charging Asus Vivobook X6502H laptop. Learn step-by-step diagnostic techniques for identifying and fixing complex electronic faults.
- YouTube
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ASUS ROG Strix G713 Laptop Repair - Fixing What Two Shops Couldn't

Troubleshoot and repair an ASUS ROG Strix G713 laptop that stumped two repair shops. Learn advanced electronics repair techniques and gain motivation for tackling challenging repairs.
- YouTube
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Lenovo X1 Laptop Diagnosis and Motherboard Replacement

Diagnosing a Lenovo X1 and replacing its motherboard when board replacement is the only option.
- YouTube
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Lenovo V15 Laptop No Power Issue - Perfect Repair Job and Customer Experience

A Lenovo V15 no-power repair is presented as an example of a well-done job and a satisfied customer.
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Acer Nitro 5 No Power Issue - KB9022Q Chip Replacement

Dive into a challenging Acer Nitro 5 laptop repair, focusing on power issues and KB9022q chip replacement. Learn advanced troubleshooting techniques and component-level repair skills.
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