Electric noise when plugging in power cable to PSU

Frinker

Reputable
Jun 12, 2015
12
0
4,510
0
When I plug the cable in, it makes a couple of brief electric crackling (not sure of best word) noises. Anyone know what could be at fault here?
 

Ralston18

Titan
Moderator
A warm plug (either end) may indicate some physical fault with the power cord: too much resistance or load, heats up....

Still your existing power cord may have some physical problem that interfers with making a solid electrical connection to the PSU prongs. And that end tends to be a bit tougher to physically plug in to begin with.

Then, if you are plugging it in while electrically live (i.e., plugged into the outlet) some arcing/sparking is taking place before the two ends are fully mated.

Plug in the PSU end first, make sure the plug is fully in place. Plug in the outlet end and see if the snappy sound stops.

If not, try another power cord and again plug in the PSU end first.
 

Ralston18

Titan
Moderator
Are you plugging the power cord into the outlet before plugging the cord into the PSU? Connect the PSU end first.

As for the noise is it a snap, "zzzz" sound, crackling? Hopefully no sparks, burning smells. Does the power cable get warm?



 

Frinker

Reputable
Jun 12, 2015
12
0
4,510
0


Yeah, it's like a snappy crackle sort of noise. The Power cable doesn't seem to be warm though. Also I was plugging it in the outlet first, I'll take a note of this.

 

Ralston18

Titan
Moderator
A warm plug (either end) may indicate some physical fault with the power cord: too much resistance or load, heats up....

Still your existing power cord may have some physical problem that interfers with making a solid electrical connection to the PSU prongs. And that end tends to be a bit tougher to physically plug in to begin with.

Then, if you are plugging it in while electrically live (i.e., plugged into the outlet) some arcing/sparking is taking place before the two ends are fully mated.

Plug in the PSU end first, make sure the plug is fully in place. Plug in the outlet end and see if the snappy sound stops.

If not, try another power cord and again plug in the PSU end first.
 

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