MacFixIt reader Silvio Demilio describes a strange noise generated by his 17" PowerBook G4, corroborated by other users: "I recently purchased a PowerBook G4 17". It has two annoying noises an ...

Judicious component layout plays a large role in immunizing test and control systems against electrical interference. A conveyor control system activates a motor once every 12 sec over its 10-yr ...

So I picked up a new phono preamp recently, a Pro-Ject Tube Box S2. It's a nice unit and sounds great, but I've noticed that I'm getting a low-level buzz from its outputs. (It's definitely a buzz, not ...

The SureTrace™ Circuit Tracer Pro redefines what a circuit tracer can do. With numerical voltage readings, continuity testing, AC amperage readings, contactless tracing, and receptacle testing, it's ...

Vehicles are notoriously noisy environments, and I don't mean the kind of noise you can hear. All those spark plugs, actuators, alternators, and motors generate enough noise to disrupt communications ...

Bob is a service technician who is well trained and nationally certified. However, he has sometimes suffered from the same confusion that all technicians occasionally do — the facts that he gathers ...

The plant air system depends on four 100-hp motors, and one of them is vibrating badly. The pipe coming off the compressor even makes a rattling sound. What should you not do to solve this problem?