This VCR came in my shop making a gear grinding sound as soon as it was plugged in, and it would not load my tape. It turned out that the infrared emitter had died, and it made the tape loading carriage think I was trying to insert Continue reading VCR was grinding gears due to a bad infrared LED.
A couple years ago one of my viewers contacted me, and asked if I had any idea why the bridge rectifier in his power supply blew up while he was testing it. Unfortunately he had plugged the meter probes from his meter into the current measuring ports, and didn’t understand Continue reading Your Multimeter Can Blow Things Up.
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.
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.
This video is about what can happen if you install a repair kit, and fail to detect what caused the components to go bad in the first place.
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.
I’d like to thank everyone for subscribing ot my channel, and for all the technicians who have helped me fine tune some of my own troubleshooting skills.
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.
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.
One of the nice things about learning how to troubleshoot Televisions is many of the troubleshooting skills we learned can apply to repairing a variety of other devices. In this case a Dentist brought in a motorized shaker used to mix amalgam fillings.
While examining the circuit board I noticed a Continue reading Dental Equipment Repair. Water damage.