Category Archives: Grants Pass TV Repair

Drone motor failure from over current. What to avoid.

The Drone in this video is the Hubsan X4 Desire, Model number H502E. This particular Drone has been brought in my shop with a burnt out motor on Three occasions. Considering how new it is, I figured the motor would have lasted much longer, but after witnessing the circumstances which Continue reading Drone motor failure from over current. What to avoid.

Troubleshooting bad circuits using ohms law.

http://davestv.jestinemichellepow.click2sell.eu When ohms law was first explained to me, I was clueless about how it could actually be useful in real life. Even though the math was simple enough, somehow I failed to grasp how it could be useful in troubleshooting or designing circuits. Fortunately a situation Continue reading Troubleshooting bad circuits using ohms law.

Understanding the hot and cold side of a switch mode power supply.

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Beginners in electronic troubleshooting often make the mistake of testing voltages from the wrong ground, so I thought it would be a good idea to cover this in greater detail. Jestine Yong published a book on switch mode power supplies which I found to be very helpful Continue reading Understanding the hot and cold side of a switch mode power supply.

Isolation Transformers can save your life, and your equipment.

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I discovered their importance of Isolation Transformers in the school of hard knocks. At that time of this educational experience I had just started working as an apprentice in a television repair shop, and my boss asked me to hook up a our oscilloscope to a TV he was repairing. Continue reading Isolation Transformers can save your life, and your equipment.

Using freeze spray or hot air to troubleshoot Circuit Boards and LCD display problems.

There have been many occasions where I’ve found hot air and or freeze spray can be helpful in troubleshooting intermittent circuit board issues, or intermittent LCD displays problems. Here was one such instance where I applied a little heat to the edge of the display, and observed that the Continue reading Using freeze spray or hot air to troubleshoot Circuit Boards and LCD display problems.