Repair

Performing A Chip Transplant

Hackaday posting article Performing A Chip Transplant To Resurrect A Dead Board describes a situation where  the only option was to try to fix a device, which in the end involved a delicate chip transplant. The board was the Pixl.js, an LCD board with the nRF52832 SoC with its ARM Cortex M4, RAM, flash, and Bluetooth

Huawei tablet repair

I had a Huawei MediaPad T3 10″ (AGS-L09) tablet with broken glass. The repair at the official repair center costs more than buying a new tablet (both around 150 Euros), so repairing does not make much sense. How about a DIY repair for broken screen? It seems to be doable according to several repair videos.

USB endoscope repair

I have had this cheap USB endoscope for few years. Then it suddenly stopped working. So I opened it up to see what is inside and hopefully fix to work again. The problems seems to be loose green wire. A bit of soldering and it works again. Not much electronics. Just wiring from USB connector

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