All posts by Jestine Yong
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About Electronics Repair Book/Ebook
I like to know getting a LCD repair ebook can help me on any motherboard repair such as printers, camcorders, dvd players, desktops and laptops pc, etc? Answers: Generally it can help but not that much because...
- Posted July 1, 2013
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Can we test IC using a multimeter?
How can we test IC using a multimeter ? Answers: Multimeter can only be used to test the IC dc supply voltage and to use the ohm range to find out if the IC is shorted to...
- Posted July 1, 2013
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No Power In ATX Power Supply Solved
My friend brought to me his work computer power supply to fix it. When I test the power supply it didn’t work, I mean the fan didn’t rotate. At this moment, i began open the cover of...
- Posted June 30, 2013
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Video: Missing 12 Volt In Element Hisense Dynex Insignia LCD TV ELCHW402
Another great video recommended by Beh Likes(3)Dislikes(1)
- Posted June 30, 2013
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Replacement For PC817 Optoisolator IC
Sir Can you help me, Do you know the replacement value for this part number COSMO 1010 817 H25 (PHOTO COUPLER) Answer: The actual part number is PC817. You can read the below post for more information:...
- Posted June 30, 2013
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Treadmill Repair
A dead treadmill that brought back to life A guy who is selling second hand sport equipment brought a power board that was dead. This power board is a part of a treadmill machine. He could not...
- Posted June 29, 2013
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Hissing Sound In TV
At the starting my TV produced heave hissing and wiring noise. After few minutes it will disappear. But picture and sound are clear. Answer: Hissing sound usually are caused by transformer, inductor/coil due to loose lamination of the core....
- Posted June 28, 2013
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Display “Locked” in LCD/CRT
The moment power on, the screen will display “LOCKED”, i don’t know how to reset to remove the screen lock. Answer: You need the service manual to find out the combination keys to unlock it. You can...
- Posted June 28, 2013





