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Have an overclocking problem

Cooling unit starts, runs for a second then stops.

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Re: have an overclocking problem

I think it is the voltage problem because that ups leave the power supply, for more explain your problem briefly.

Posted on Dec 12, 2007

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When there is a power surge the (power quickly off then back on), the unit doesn't provide battery power (connected items turn off), and the unit starts to beep.

just unplug the UPS and check for how long it runs on batteries, if time is short just replace the batteries. if you are using a line interactive UPS you may have to replace it by an online UPS

Jun 15, 2015 | CyberPower UPS Battery Backup Systems

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Pulsar el4: unit only delivers power to connected devices when running from batteries. When external AC is connected, unit cuts power output.

replace capacitor c014 with a new 47 uf one, this fixed mine - for pulsar el4 and ES4 - see messageboard here!topic/fr.sci.electronique/Jq_WQMpl8QI

Jun 11, 2013 | MGE UPS Pulsar EL4 (83004) UPS System

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I just bought my laptop from walmart..i dont know how or if i have set it up properly..but when i play a video like on utube it just plays seconds of it and keeps running like its tryin to load.. what can...

If it is playing Video files offline ok, then it sounds like you are suffering from Buffering.
When your connection speed is not fast enough to download faster than it takes to play it. The video stops or stutters. You can press pause and wait for the buffer to fill before you press play.
You can sometimes adjust the settings to buffer for 30 seconds before playback starts.
The only solution is to get a better internet connection.
Check and check your connection speed.
If it is no where near what you are paying for, you may want to ring your ISP and complain

Aug 05, 2010 | UPS Battery Backup Systems

1 Answer

My PC is geting switch off when Power flatcutations come,even ups is connected and no back up comes from UPS, after that UPS takes >4 seconds to switch to mains supply.

A four second transfer time is way too long by at least an order of magnitude. There is no way the power supply in a PC can maintain for that long a time.

If you are in a real critical environment I would recommend going to a UPS which runs continuously and runs off a battery which is charged whenever utility power is available. That way there is no transfer time.
These offline units are harder to find however.

I suspect your UPS system is defective.

Apr 26, 2010 | QVS NetStar (UPS650A) UPS System

1 Answer

Blinking lights

The problem is, is that while the unit is not overloaded (too much plugged in) either the batteries are close to failure, OR more likely you have so much plugged in you have less than 2 minutes of runtime.

Try removing some devices, lower the load. The row of green lights on the left is your load level indication, you want no more than 4 lit usually, 80% load is the most recommended. This will allow more runtime and should stop the flashing.

The flashing is just ment to alert you to less than two minutes of runtime.

If you have 80% load or less, and it still flashes, press and hold the on/test button until it clicks over to battery, the unit will now run a self test and switch back to main power after a few seconds and it should stop blinking.

If you want a copy of your user manual, you can find it here: (the Smart-UPS 1000)

Apr 08, 2010 | APC Smart-UPS 1000VA UPS System

1 Answer

The unit beeps

I am getting these directly from the user manual (available here:

Issue: On Battery - UPS is supplying battery power to the load connected to the Battery outlets.

Visual Indication: Power On LED - ON (off during beep)

Audible Indication: Beeping 4 times every 30 seconds

Stops When: UPS transfers back to Power On operation, or when UPS is turned off.

- OR -

Issue: Sleep Mode - During On Battery operation the battery power has been completely exhausted and the UPS is waiting for utility
power to return to normal.

Visual Indication: None

Audible Indication: Beeping once every 4 seconds

Stops When: Utility power is restored, or if utility power is not
restored within 32 seconds, or the UPS is turned off.

All other issues are CONSTANT tones, which you did not specify, or there are no audible tones associated with it.

Apr 07, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

1 Answer


The cooling fan is probably not working. Unit will overheat. Check the fan to see if it run continuously with no scraping noise with the UPS turned "ON". If the fan does not run, open the case and replace the fan.

Jan 19, 2010 | Powerware 9120 UPS System

1 Answer

APC UPS XS900 is claiming the battery unit is disconnected

HEY !! it's under warranty. I had one of these freak out on me in much the same way once in a while. I did the online help on APC's website. STAND YOUR GROUND if you don't get the answer you want. I held strong even after the "tech" said repeatedly that it was a building wiring fault, which it's not, and harassed him into exchanging it for a new one. Good luck

Nov 01, 2009 | APC Back-UPS® XS 900 (BX900R) UPS System

1 Answer

Liebert UPStation S floating neutral failure

surprised it tried to start with amissing neutral,
this is used to reference one side of the incoming live for the control circuits
Emerson do not release diagrams, and I doubt if anybody has the correct diagram as the unit is so old. ups is really difficult to repair, even with diagrams.
I used to fix AP200 series units and I had the service manuals, they were still very difficult.

looks like your ups is toast, could be expensive but,
maybe you can find a repair tech who can get parts form other units.

Jan 09, 2009 | APC Back-UPS CS 500 VA Refurbished...

1 Answer

Software problems and power shutdowns

so i would suggest to look into your add/remove programs and see is their is the older file still their. if thier is then you may need to uninstall it. however getting any program to startup in your computer, you just need to move the programs files to the startup folder in your start menus.

Aug 07, 2008 | Energizer ER HM450 (ER-HM450) UPS System

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