All posts by Jestine Yong
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APC UPS Model PR550i Repaired
The complaint for this APC UPS Model PR550i was it can’t charge and sometimes (intermittently) all the front panel LED’S lights up. A new battery was replaced with no improvement. Since the problem have some similarity with...
- Posted October 16, 2008
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Fixing Blue ESR Meter
Here is an email that i got from one of my ERG member who has successfully built the Blue ESR Meter Kitset. He is a beginner and progress very fast and if you are a beginner too,...
- Posted October 16, 2008
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Capacitor Coding
Can you still remember the post where i posted a questions on how to read the front number of a capacitor? You may click on this link to read the question again. In fact i found this...
- Posted October 15, 2008
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Recognize All The Different Transistors
While searching for a data sheet, i came across a website that sell electronic components and it has lots of photos for many different types of transistors. If you are new in this electronic repair field, then...
- Posted October 15, 2008
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Repaired BenQ FP93V 19″ LCD Monitor
The complaint of this BenQ FP93V 19″ LCD Monitor with P/N number 9JL1J72-VWM was no power. As usual have to check primary side first and found that four components have problem. It was a 2 ampere main...
- Posted October 14, 2008
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Sad News
Got a call from my friend telling me that one of my former electronic repair course student died in a car accident yesterday. He was young (about 23 years old) and was quite good in all the...
- Posted October 14, 2008
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Technology-Honda-The Power Of Dreams-Asimo
Check out the latest video of ASIMO by clicking on the photo Likes(0)Dislikes(0)
- Posted October 14, 2008
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About UC3842 PWM IC
This UC3842 IC is one of the most famous PWM IC use in SMPS circuit. It can be found in many electronic equipment ranging from Monitor, TV up to computer power supply. Do you know that not...
- Posted October 13, 2008




