Question about Cybernet Systems CyberPower 625AVR (cp625avr) UPS System

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Wiring Fault light

My computer would not turn on and the "wiring fault" light is lit on the Cyber Power 625AVR. When I bypass the 625 and plug the computer directly to the wall socket, the computer works. Is my surge protector just done for?

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  • thirtysixer Feb 18, 2008

    The wiring fault light is on and the on/off light is not on. The computer is plugged into the back three outlets and works okay. The sound amplifier is plugged into the front of the power system and it does not work. Would this indicate that the battery section of it is dead and the components will work only on the direct connection to the wall socket?

  • Anonymous Mar 09, 2008

    The same exact thing happened to me...I thought it was just done for...if anyone knows different, Please post.



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You can download the manual from the link below: The "wiring fault" could be serious, as per manual: "This LED indicator will illuminate to warn the user that a wiring problem exists, such as bad ground, missed ground, or reversed wiring. If this is illuminated, user is advised to disconnect all electrical equipment from the outlet and have an electrician check the outlet to insure proper ground." I would turn the UPS off, unplug all equipment, wait 10 seconds, reset the circuit breaker (if tripped) and turn the unit on. If you still have an issue then it's probably fried! Have you had any thunder storms or electrical power outages recently? Check your house insurance because it may cover a replacement unit. Please update the question & let us know if the information given was useful to you - Good Luck!

Posted on Aug 14, 2007


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Suggest you see if the problem is the Power On switch, or the Power Supply.

(First check to see if the receptacle in the surge protector, that the computer is plugged into, has power.
Have had a few bad surge protectors, where just THAT receptacle was bad.

"Hmmm, surge protector power on LED light is lit. Monitor, printer, and router have power, that are plugged into the surge protector.

Plugged a lamp into THAT receptacle, and found it to be bad)

To test whether the Power On switch, or the Power Supply is bad, a jumper wire is used to bypass the Power On switch.

[ The Power On switch is located inside the plastic Power On button.
This is an example of a generic ATX Power On switch, that I have found fits many computers, ]

The jumper wire is used on the 20, or 24-pin ATX main power cable's connector.
While still plugged into the motherboard.

The jumper wire connects to the Soft Power On wire, (Green), and to any Ground wire. (Black)

Example of a 20-pin ATX main power cable, and it's respective connector,

Example of a 24-pin ATX main power cable, and it's respective connector,

Using the jumper (Wire) to bypass the Power On switch, turns the Power Supply on?
The problem is a bad Power On switch.

Using the jumper to bypass the Power On switch, does Not turn the Power Supply on?
The problem is a bad Power Supply.

There is a correct procedure for performing this test.
Post back in a Comment if you wish to know.


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Suggest you check the simple stuff first.

Not checking is akin to a car that won't start, and tearing apart the entire fuel system, only to find it was just out of gas.

1) Make sure the receptacle the surge protector is plugged into, has power. Surge protector Power On light should be lit.

2) Check THE receptacle in the surge protector, that the computer itself, is plugged into.
Have had a number of expense surge protectors, where just THAT receptacle was bad.

("Hmmm, surge protector Power On LED light is lit. Monitor, printer, sound system, and router plugged into the surge protector has power. Should be good to go.

Plug a table lamp, or similar device into THAT receptacle.
Make SURE it has power)

Surge protector, and receptacle in surge protector checks out?
Bypass the Power On switch.

See if the problem is a $5 Power On switch, or the Power Supply.

(Generic ATX Power On switch that I have found fits many computers,

{The Power On switch, is located inside the plastic Power On button assembly}

This is information about computer Power Supply's,

This is a basic example of an SMPS, (Photo at upper right. You can click on the photo to enlarge), and info about.
(Switched-Mode Power Supply. The main type of power supply used in personal computers),

By bypassing the Power On switch, you will be able to determine if the problem is the switch, or Power Supply.

Bypassing the Power On switch turns the Power Supply on?
Bad Power On switch.

Bypassing the Power On switch does Not turn the Power Supply on?
Bad Power Supply.

A jumper wire is used on the 20, or 24-pin ATX main power cable.
The jumper wire goes to the Soft Power On, (PS_ON. Green in color), to ANY Ground wire.
(ALL Black wires are Ground wires)
A MOMENTARY contact is used.

(Example of a 24-pin ATX main power cable, and it's respective connector, )

In order to guide you in this procedure, I need to know the computer manufacturer name, and Model Number.

On a desktop computer this will be located on the Back of the computer tower, (Next to the Windows product key), or up on the side of the tower.
Some models have it where there is a door you open in the front, and the product number, or model number is located there.

Post back in a Comment.

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