AM DEMODULATION Amplitude modulation refers to any method of modulating an electromagnetic carrier frequency by varying its amplitude in acc...

A VIZIO L32 HDTV came into the shop that would power on, the standby/power LED would go from amber to green and TV had audio but no picture...

Here is a great article I wanted to share with all of you. It will show you how to make your own ESR meter at home. This is a fun project an...

Samsung Syncmaster 906BW, LS19MEWSFY/XAA LCD monitor came into the shop today with no picture(really it was that the back lights were not li...

To learn how I repaired this power supply email johnpreher@gmail.com HPT4254X/XAA,  BN44-00161A Professional Repair: If you are interes...

Have you ever wondered what Ripple Rejection Ratio is? Ripple Rejection Ratio or Power Supply Rejection Ratio (PSRR) is a measure of how wel...

Here is a great reference manual for you to print out and add to your collection. Linear & Switching Voltage Regulator Handbook

Here is lots of great info on transistors. If you want an in depth look into transitors this tutorial is a must read. Click here to read th...

This is an important topic, all good technicians not only need to know what a transformer is and what they look like but also need to unders...

Here is some good info on testing MOSFET transistors, one link uses a DMM and the other link is from my friend Jestine Yong , he shows you h...