Repair

Cheap eBay LED tester fixed

Found this from eBay for about 2 dollars: New Mini Handy 2~150mA LED Tester Test Box for Light-emitting Diode Bulb Lamp Description: 100% brand new and high quality Material: Plastic Color: White Handy device for testing LED’s. Simply plug your LED into the correct holes (all of which are marked) and push the button to

Failed car USB charger teardown

Here is teardown of one cheap car USB charger. It failed after few years of use. Outside Inside Electronics As you can see the fail was in soldering that connected two circuit boards. The fail had ripped of solder pads from circuit board. The soldering quality on some other places also questionable. There is simple

Top Linux distros for computer repair | Opensource.com

https://opensource.com/life/15/2/five-specialized-linux-distributions-computer-repair?sc_cid=7016000000127ECAAY There are specialized tools that can aid you in fixing problems with a computer or help you be prepared for when something bad does happen. Many of these tools are actually highly-specialized Linux distributions.  This article takes look at five different Linux distributions designed to make your life easier when computers start giving you

Secret chips in replacement parts can completely hijack your phone’s security | Ars Technica

https://arstechnica.com/information-technology/2017/08/a-repair-shop-could-completely-hack-your-phone-and-you-wouldnt-know-it/ Booby-trapped touchscreens can log passwords, install malicious apps, and more. People with cracked touch screens or similar smartphone maladies have a new headache to consider: the possibility the replacement parts installed by repair shops contain secret hardware that completely hijacks the security of the device. The research, in a paper presented this week at the 2017 Usenix

Banana connector types

https://en.m.wikipedia.org/wiki/Banana_connector A banana connector is a single-wire (one conductor) electrical connector used for joining wires to equipment. The term 4 mm connector is also used, especially in Europe,because the pin’s diameter is nominally 4 millimetres (0.16 in).The pin has one or more lengthwise springs that bulge outwards slightly, giving the appearance of a banana. The original plug consists of a cylindrical metal pin about 20 millimetres (0.79 in) long.However other

GarrettCom Converter Repair

http://www.epanorama.net/newepa/2015/01/14/garrettcom-converter-teardown/ I did more than two years ago tear-down of this 100 Mbit/s copper to fiber Ethernet media converter (link above). Now I decided to try to fix it. It turned out that originan PSU did not put out right 3.3V voltage, but considetably less. The digital electronics worked out nicely when fed with 3.3V

Top Linux distros for computer repair | Opensource.com

https://opensource.com/life/15/2/five-specialized-linux-distributions-computer-repair?sc_cid=7016000000127ECAAY This article takes a look at five different Linux distributions designed to make your life easier when computers start giving you a headache. Give them a try, and make sure you keep CDs or USB drives with your favorites handy for when something does go wrong. 

Tips for troubleshooting with Linux | Opensource.com

https://opensource.com/business/15/10/troubleshooting-process-linux-problems?sc_cid=7016000000127ECAAY Although it would be nice to believe that cars, home theater systems, computers, and Linux never break, the reality is that they do. Many people have no problems with Linux, but those who do want the best information and guidance possible.