Ideally you first want to test your speakers with an audio generator to listen out for faults, and then with guitar and amp to assess the quality of the tone. However if you don’t have the equipment you can probably get away with just one method or the other. Click hereto skip to t...
Often, the problem is not in the amplifier but in one of the connections between it and either a source or the speakers. Use a continuity tester or a multimeter to check continuity of audio cords going in and out of the amplifier before attempting to open the unit up and look further. ...
First take a look at the speaker driver: take a multimeter, set it to measure resistance and check the driver’s terminals. If you get the reading around 2, 4, 8 or 16 Ohms, then the driver’s coil should be OK. If you don’t get any reading at all (the circuit is open) that...
A resistance is a DC resistance, which can be measured with an ohmmeter. If there is a capacitor in the signal path we measure nothing. With a voice coil of a speaker we can measure a DC resistance. With a digital multimeter DMM resistances can be measured easily, but we cannot measure...
you'll need to use amultimeter(or trial-and-error) to find out which of the wires you need to connect. With luck, you might be able to open up the earbuds or headphones at the listening end to find out which wires are connected where and carrying the sound signals; you can then fig...
If you're ever unsure if the solder joint you created is making an electrical connection, you can use a multimeter to test forcontinuity. Holding Headers Against a Board For those that have the dexterity, you can install a row of headers by holding the pins against the board! You can try...
For classic coil speakers I'd use a series capacitor and an amplifier, but this time the transducer is not a coil, but a capacitor. Would using an H-bridge configuration with +8.0V PSU suffice? The h-bridge will be driven so that the polarity inverts every half of a period. Yes, I...
There are several possible reasons why a desktop, laptop, or tablet computer such as aSurface Pro fails to power on, so you must step through a complete troubleshooting procedure like the one we've outlined below.
How Do You Check Voltage With a Multimeter? A multimeter is an instrument that can measure voltage, current, resistance and possibly additional parameters. You can also use it to check continuity of cables and check fuses. If you don't know how to use one, read my guide How to Use a ...
Multimeter Canned air or soft brush Foam swab or camera-lens tissue Lens cleaner fluid Clean, dust-free cloth White lithium grease Tweezers Cotton gloves CD cleaning fluid or denatured alcohol What Are the Steps to CD Player Repair? The four primary fixes you can do to a CD player include ...