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APC Back-UPS RS,600 Watts /1000 VA,Input 120V /Output 120V, Interface Port USB, Rack Height 2.

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Overload alarm lights and sound

My ups, after 5 years of continuous operation shows the overload's light .

I unplugged the PC and I replaced the battery but I have not solved the problem.

Then I opened it to see if there are components that are burned or leak but nothing.

To be sure I replaced the cooling fan but nothing has changed.

Can anyone give me some tips?

Thank you very much.

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Hi, i had the same problem twice...!!!

My battery was ok, everything was ok but

the beep keep going on, for overload...

Both times i fixed doing these steps...

- Turn off the unit

- Flip over the unit

- Open the battery-cap and turn the power on

- Green Light is flashing

- Try Now (with the green light flashing) to disconnect the battery...

- Now it should be ON with the Empty battery light on (Red light)

- Connect again the battery as it is...

Now it should be ok...!!!

Good Luck...

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Thanks to all. I have not solved the problem. I replaced the old ups with a new one.

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Roberto, If it alarms, even with nothing plugged in, then it is possible that one of the MOSFET on your mainboard has failed.

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metal–oxide–semiconductor field-effect transistor (MOSFET)

http://en.wikipedia.org/wiki/MOSFET

Did you solve the problem? Same problem here, 4 years later..

daigoph@gmail.com

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Hi, i had the same problem twice...!!!

My battery was ok, everything was ok but

the beep keep going on, for overload...

Both times i fixed doing these steps...

- Turn off the unit

- Flip over the unit

- Open the battery-cap and turn the power on

- Green Light is flashing

- Try Now (with the green light flashing) to disconnect the battery...

- Now it should be ON with the Empty battery light on (Red light)

- Connect again the battery as it is...

Now it should be ok...!!!

Good Luck...

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Thank you but I replaced the old ups with a new one. Yours sincerely.

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I too facing the same problem....battery charging process is fine...but when i turn on the inverter it trips and shows overload and keep continuosly beep beeps....pls help me to solve this problem....i expecting board level service suggestions ...thank you

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My problem solved with removing the all cables also power cable wait 5 minute & connect cable again it's working.

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Roberto 将永远感激不已
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