February 2012 Repair Newsletter

If you are a first time visitor to this blog and wish to read the February 2012 repair newsletter about “How To Repair Dim Display Problem In LCD Monitor" then you can click HERE to subscribe to my monthly repair newsletter and you could also read all the previous repair newsletter too. See you in the other side!

Technology-GM Advanced Tech Window

AOC LCD Monitor Panel Broken

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Polar 950 ToneOhm Short Locator

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Super Bright LED Torchlight

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Does Equipment MCU Need Exact Voltage To Work?

What do you think? Does a MCU need the exact voltage to work? Actually it depends on the equipment itself. Some equipment need to have at least 4.85 to 4.9 volt to run properly (assuming if the MCU need 5 volt to run) otherwise it may cause some weird symptom to your equipment. To some equipment it can even run very well with 4.7 volt! In certain cases if the 7805  voltage regulator ic have problem the voltage could shoot up to 5.2 to 5.3 volt! The best is to replace the voltage regulator ic for the continuous of smooth operation of the equipment. If you have read the repair article by Kent about the LCD TV that automatically changing channel, the problem was caused by a defective voltage regulator- instead of producing 3.3 volt it output 3.7 volt! In the future if you troubleshoot any equipment that have some funny or weird symptom please make sure the supply voltage to the MCU (micro controller unit) is good.

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Back to Work

Started working today after one week break due to the festive season. Lots of thing needs to be done in my office and will continue to blog starting today.

Going For A Holiday

Since my company is closing for a week due to the Chinese New Year celebration, my family and I together with some friends will be going for short holiday trip. I will be back on Saturday night and only be able to check emails on Sunday.

Electronics Repair FAQ 21

Please click THIS link to read electronics repair FAQ 21

Amazon Bookstore

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