We first look at the following two pictures. Picture 1 is the “BIOS CHIP” of the circuit board. When we replace the PCB, we need to swap the “BIOS CHIP” with your … Samsung BF41-00329A PCB FAQs and SolutionsRead more
Why are there two sets of the Ctrl, Alt, and Shift modifier keys on the keyboard?
Why are there two sets of the Ctrl, Alt, and Shift modifier keys when only one of each is necessary? Solution: When touch-typing, you use the alternate side “function” keys. E.g. qwer,asdf,zxcv … Why are there two sets of the Ctrl, Alt, and Shift modifier keys on the keyboard?Read more
Why are USB hubs mostly 4- and 7-port
Why are USB hubs provided in 4- and 7-port varieties. What’s special about these numbers? Why don’t I see 3-, 5-, 6-, and 8-port hubs? Is there something special about 4- and … Why are USB hubs mostly 4- and 7-portRead more
Why do some AC adapters and power supplies generate a whining noise, and what can I do about it?
I have many different AC adapters and power supplies for a variety of devices, ranging from small 5V/1A USB chargers to laptop power adapters and desktop PSUs. However, I often hear a … Why do some AC adapters and power supplies generate a whining noise, and what can I do about it?Read more
Samsung BF41-00322A PCB FAQs and Solutions
We first look at the following two pictures. Picture 1 is the “BIOS CHIP” of the circuit board. When we replace the PCB, we need to swap the “BIOS CHIP” with your … Samsung BF41-00322A PCB FAQs and SolutionsRead more
Why do some wifi routers block multicast packets going from wired to wireless?
I have worked with dozens of consumer grade WiFi routers, and they have been really hit-or-miss with this, though it seems to be getting better. Example of issue: A device that can … Why do some wifi routers block multicast packets going from wired to wireless?Read more
Why does Chrome sometimes download a PDF instead of opening it?
When I go to certain addresses of PDF files, Chrome downloads the PDF instead of opening it using its built-in PDF viewer. The page is then blank white. There is no problem … Why does Chrome sometimes download a PDF instead of opening it?Read more
Samsung BF41-00314A PCB FAQs and Solutions
We first look at the following two pictures. Picture 1 is the “BIOS CHIP” of the circuit board. When we replace the PCB, we need to swap the “BIOS CHIP” with your … Samsung BF41-00314A PCB FAQs and SolutionsRead more
Why does Excel not auto-update my equations anymore?
For some reason all of a sudden when I update cells in Excel, my equations are not being updated. For example, I have a simple equation =SUM(C4:C16). If I change any of … Why does Excel not auto-update my equations anymore?Read more
Why does Firefox use the “chrome://” protocol / schema in urls?
When I want to configure an addon, for example Ghostery, the tab shows a URL like this one: chrome://ghostery/content/options.html What does it mean? Does it have something to do with the … Why does Firefox use the “chrome://” protocol / schema in urls?Read more