Installation Training and/or Supervision

It often takes longer to troubleshoot and repair problems resulting from poor installation and wiring techniques than the original work took to complete.  Presented here are photographs of work which either did, or likely will, result in a service call.  Also shown are examples of work knowledgeable customers would find unacceptable.   The AV industry is unique among the commercial construction trades in that there is rarely an inspector which renders approval of the finished work.  All too often, this results in poor sounding, under performing, and/or inconsistent operation.  I provide basic wire termination training and have a companion audio electronics class.  Yes, an untrained or uncaring installer can create a real "can of worms" on a jobsite.

Strain relief not crimped onto the jacket. Wire is pinched.

Delicate conductors on a hard to orient connector will pull out without a strain relief. The jacket is stripped too far back.

Connectors not screwed down.

No service loop.

Sloppy. Can't close door. No protection on wire entry.

Should be behind blank plate.

Should have provided a blank plate.

Shield is an island in the middle of the solder.

Note scratch in the wall.

Just plain sloppy.

Not all cables dressed.

No shell, no screws.

AC adapter hanging - from unpluggable cord!

Wires barely under screw terminals. Crimp connectors would be prefered.

No all parts of cable present. Not screwed in.

Buzz in system due to open input left on floor.

Wired wrong. Red & Blue reversed. Was the system tested?

Note stray lead from black wire shorted to ground.

Uninsulated wire used.

Wires pulling out of screw terminals. Good use of heatshrink though. (It will look nice even though it doesn't work!)

Grounds mis-wired onto negative and positive.

Negative output shorted to ground.

Ground and negative wires pulling out.

Negative and ground reversed.

Shields and negative reversed.

Drywall dust on the floor.

Power cable used for data.

Sloppy, unreliable.

Sloppy

Trip hazard.

Excess wire on unused input picking up noise.

Poor multi-conductor breakout. Hard to trace & label.

Poor multiconductor breakout cable termination.

Negative input of balanced input not grounded. This is also a mic line!

Common bus wire not even soldered, much less terminated neatly.

Jacket not in strain relief.

Suspect wiring.

Unshielded twisted pair used for Video, S-Video, Audio without benefit of baluns.

Improperly crimped BNC and "splitting" video.

Excessive uninsulated wire shorted out power supply.

Center conductor not soldered.

Push it on......

.......it will fall off!

Too much insulation removed.

Too much insulation removed. This power supply was shorted.

Sloppy.

Single strand of shield shorting to center conductor.

Two cables of identicle function - wired differently.

Lack of strain relief allows conductors to pull out.

Strip more jacket off so mis-wirings can be corrected without reterming every wire.

Shorted at output.

Inconsistent wire dress.

Found on the web. Origin unknown.

This doesn't look too reliable....

Donated photo.

Donated photo.

What you get with untrained installers!