Tesfu Aklok

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Nokia 5730 SIM card assembly connection - Test spots for troubleshooting

The SIM Card circuit of Nokia 5730 Xpressmusic, this guide can be used to troubleshoot and repair <b>Insert SIM Card problem</b> when occurs. The SIM card …

Dowload Nokia hardware problem solution pack

Nokia hardware problem solution pack available to download. these are pictures and images guides when troubleshooting hardware problem issues. Some …

SE Xperia X1 Touch Screen Not Responding in Landscape Mode - Repair Solution

This common problems on Sony Ericsson Xperia X1 like, touchscreen just stops responding once slide out the keyboard, ended up black screen when slide …

Safety Procedures and Proper Handling of Tools and Test Equipments on Cellphone Repair

<b>Safety procedure and</b> <b>proper handling of tool</b> is highly observed when working any electronic components to avoid risk of unnecessary further damages …

Cell Phone Power ON/OFF switch line paths, Basic test procedure

If you ever wonder how to determine if the power on off switch line paths is working or not or being cut or open, when proceeding to repair a dead …

100% Free! Cellphone Repair Tutorials for beginners

Want to learn cellphone repair and become a Pioneer like Masters and Experts? Learn the basics and advance troubleshooting techniques without …

EMI - ESD Filters

<b>Electrostatic discharge</b> (<b>ESD</b>) is the sudden and momentary electric current that flows between two objects at different electrical potentials caused …

Understanding how RF circuit Works on Cell Phones

In cell phone repair it is very helpful to understand how the RF circuits works , for this is a big help when<br>troubleshooting No signal problem …

RF and IF Amplifiers and Filters

<b>Electronic filters</b> are electronic circuits which perform signal processing functions, specifically to remove unwanted frequency components from the …

Oscillators

An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave.<br>A low-frequency …

Adjustable DC Power Supply

<b>Adjustable DC Power</b>s <b>Supply</b><br>The Dc power Supply can be used to substitute for the Battery Voltage when do live voltage checking on the PCB circuits... …

SMD Rework Stations

<b>SMD</b>(Surface Mounted) Rework station is used to remove, replace, do re-balling <b>BGA</b>(Ball Grid Alley) chips and <b>SMD components.</b><br>Make sure that the …

MuItimeter Tester

<b>What is a multimeter tester?</b><p>A multitester or multimeter is a device which can be used to gather data about electronics circuits. A basic multitester …

Introduction to Basic Electronics

<b>Definition of Electronics:</b> <br>Electronics is the branch of science that deals with the study of flow and control of electrons (electricity) and the …