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Understanding TOP223P And PQ05RD11 IC In Thompson DVD Power Supply

01st December 2009
The TOP223P pulse width modulation ic is designed to work in switch mode power supply (smps). It is mainly used in the audio/video electronic equipment. Computer monitor rarely use this type of ic. In this article, I would like to share with you that not ... Read >

How To Repair Dell E173fpb LCD Monitor Easily

01st December 2009
Troubleshooting DELL E173FPB LCD Monitor with power blink symptom is quite easy if you know the right procedure to test it. There are two sections in the monitor that can cause power to blink. It is either primary or secondary section or even sometime... Read >

Testing Transformer - 3 Proven And Simple Methods To Test Transformers

01st December 2009
Testing transformer is very easy if you follow the procedure explained in this article. Generally there are two types of transformer in the market i.e. the linear type and the switch mode power transformer. In this article I'm only explain on how to t... Read >

How To Repair Dell E153Fpc LCD Monitor With Shutdown Problem

01st December 2009
Repairing the DELL E153Fpc LCD Monitor with the complaint of display shutdown after few seconds (power LED still on) was not difficult. Normally when this type of problem happens, we would first suspect the inverter board, then the filter capacitors a... Read >

Testing SCR - How To Test And Check Silicon Controlled Rectifier

01st December 2009
Testing SCR (silicon controlled rectifier) can be done by using an analog multi meter or specialize tester (such as the Peak electronic atlas component analyzer) designed to check semiconductor devices easily. SCR can be found in many electronic circuit... Read >

How To Solve Computer Monitor Display Problems That Caused By A Defective Screen Grid Voltage (G2)

01st December 2009
Computer Monitor display problems such as no display with high voltage symptom can be caused by many reasons. A defective picture tube, a faulty video preamplifier IC, a missing heater voltage, torn signal cable, negative G1 voltage became too high (-12... Read >

How To Repair Dell E151Fpb LCD Monitor - No Display Problem

01st December 2009
Dell E151fpb LCD monitor came in with the complaint of no power but upon carefully look at the LCD you could see a very light (blur) white flashes across the screen and the power LED is not lit. Removing the cover was a bit easy compared to other models... Read >

Testing Coil - 3 Simple Methods To Accurately Test Any Coils Or Inductor

01st December 2009
Testing coil is very easy compares to checking three leads components such as SCR, FET and etc. In general, a coil consists of many turns or wire wrapped around a common core. The core could be made of iron or even air. When an electric current passes... Read >

How To Read SMD Resistor Code

01st December 2009
SMD stand for surface mount device and if you repair LCD monitors, you would come across lots of SMD components. CRT monitors rarely use SMD thus it is quite easy to find out the components value. In this article, I'm going to talks about SMD resistor c... Read >

How To Repair Dell E152Fpb LCD Monitor

01st December 2009
The complaint for this DELL E152Fpb LCD Monitor was when switched on has power (LED lit) but no display. LCD Monitor is different from the CRT Monitor where you could feel the static at the front of the picture tube or hear the rushing sound from the ... Read >

How To Repair LG 710E CRT Monitor With Power Blink Problem

01st December 2009
LG 710E 17" CRT Monitor came in with the complaint of power blink. A power blink problem can be cause by either in primary or secondary section or even in both sections.A defective power IC, power fet breakdown when under load, high esr in electrolytic ca... Read >

Simple Ways To Understand The Filter Capacitors In Electronic Circuits

01st December 2009
Have you ever wonder why there are so many capacitors in electronic circuit board? They are all scattered through out the whole electronic board. You could see mica capacitors, ceramic capacitors, tantalum capacitors, aluminum electrolytic capacitors, p... Read >

How To Troubleshoot And Repair DELL E151FP LCD Monitor With No Power Problem

01st December 2009
The DELL E151FP LCD Monitor came in with no power symptom and upon opening up the cover I saw few components that were burnt. R623 (4.7 ohm) burnt at the side and you could still recognized the resistor color code. The current sense resistor (0.68 ohm... Read >

How To Restore Picture Tube Without using a crt tester, restorer or rejuvenator

01st December 2009
Picture become weak or dim usually happen after the monitor have been used for many years. Again it depends on the quality of the picture tube or cathode ray tube (CRT). Some grade A CRT can last for many years, but for the lower grade one it can only l... Read >

Repairing Samsung 153V LCD Monitor With Dim Display Problem

01st December 2009
One of the common problems in Samsung 153v LCD Monitor was display dim. If you get closer to the screen and begin to observe the display under dark environment you actually could see the display but it was very dim. If you press the front panel button, th... Read >
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