I found this video to be easy to understand and fascinating:
http://www.youtube.com/watch?v=jiejNAUwcQ8
http://www.youtube.com/watch?v=jiejNAUwcQ8
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Re: How LCD Screens Work
Nice find. Although it's the kind of video you need to watch a few times to take it all in. That guy speaks way too quickly!________________________________________________
Invisible airwaves crackle with lifeBright antennae bristle with the energy________________________________________________
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Hello, I have an "ASUS ROG Strix G713QR" laptop, and for approx. 3 months I have the following problems:
1. Laptop keyboard doesn't work
2. The backlight on the laptop keyboard doesn't work
3. The x2 side LEDs (red) on the laptop don't work
The power button works, the touchpad works, and all the USB, HDMI, Ethernet, etc. ports work.
I already tried to reinstall all the drivers and reinstall Windows. So I don't know what to try anymore that is software-related.
But I am strongly aiming that it is somehow a BIOS-related problem,... -
Hello everyone,
About me, my goal and the equipment I (don't) have:
I am brand new to this forum, and I am eager to learn about repairing laptops. I have an engineer background although I haven't done electronics for a while. I have watched several Youtube videos in the last two months, trying to understand how to diagnose a faulty motherboard. I have a USB-C Amp meter and a classic multi meter. No DC Power Supply to inject voltage, no soldering iron to replace components.
About my issue and my goal:
A friend of mine has a MacBook Air M1 A2337 that does not... -
I have three Microsoft Surface Pro 5 model 1796, with all cracked screens.
Have bought from Aliexpress three new screens, the part numbers from my and the seller are the same:
Bad working China screen part number:
Good working own screen part number
Error I get with the bad working China screen:
No error with the good working own screen:
All the three China screens (all the same exact part numbers) produce the same error in Device manager. Have also performed a clean installation... -
hello everyone, I have a particular problem with this lenovo ideapad 330s-15ikb. I had to replace the motherboard due to liquid damage, after replacing it I noticed that some letters on the keyboard do not work. So I bought a new keyboard and now all the keys work except the numeric keypad area. In practice the num lock key LED always remains on and the numbers do not work. Has anything like this ever happened to you? I also tried changing the keyboard again but the same defect remains on the numeric keypad.
I tried updating the bios but the problem remains
https://s... -
I just bought a used one for a decent price for a used device it prints very nicely and clean and clearly so I am not going to complain about it but I would like to get it working again anyone have any suggestions on how to repair this back light
If I can not get the controller to work properly then I will probably have an external power supply for the backlight because it is difficult to see the screen without out it
One —>the LEDs might be bad
Two —> the buck converter or regular might be bad
Three —> the controller might not...
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