I recently came across one of these units and the batteries have been dead for a while and need replacement. The problem is the ups had no power to it for a year or so and when I plug it in it doesn't power up when I push the power button. I'm a electronics technician and I put it on my bench and the standby power circuit seems to be working, but I noticed two eprom chips in the unit, is it possible that the software was erased over that time from not having power. I have the parts to replace the other chips on the board, but I don't want to put the time or money into it if the eporm memory is gone, or is there a way i can upload it from the serial connection. If possible, can I buy a whole new power board?
I have repaired the same.
there are some dycon to protec the circuit in the bottom part of ups that sometimes are broken,
sometimes one plug of the battery is disconnected.
can you give me the software to make shutdown of xp pc when we lost power?
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It is likely the battery. These batteries are designed to last 3-6 years in a UPS. The good news is that if it is the battery, it is completely user replaceable and you'll have a Cyber Power unit that works just like new with a new battery. What may have happened is that the battery was weak, and you may have had a slight dip in the AC power. This caused the Cyberpower unit to switch over to the weak battery which couldn't handle the load. The unit then turned off. When you press the "ON" button, the unit will go through a self-test that checks all of the components and the unit will not turn on and be functional unless all of the components come back with a PASS, including the battery. If possible, test the battery with a voltmeter, it should read around 13.5, but not lower than 11.5v DC. However, with the unit over 3 years old, it almost certainly the battery. Here's a link to a replacement battery for the CP685AVR: http://www.batteryinternational.com/cyber-power-cp685avr-ups-battery-ups-batteries-f1.html
It would appear that you need to replace the battery on this unit You could get a new battery from a local battery specialty store like Batteries Plus or Interstate Battery, or online at www.replacementupsbattery.com. A new battery would be about $30. If you took your old battery there, they could recycle your old one, as well as match it up with the correct one you would need (HR9-12 battery). We have a 3 year warranty on all our battery back up units. If you have any questions, you could contact us here at CyberPower Systems Technical Support at 877-297-6937, M-F 8-5Cent., or email us at email@example.com
ok how long you brought the ups and how long you had not start the the ups usaully ups is power dead change the battery and try to power up it should work be sure that all connection is connect properly before power up the ups.. if the ups doest work that will be the mainboard problem you hav to call for vedor to repair the unit.. yes these fuse for the ups but it unlikely to be blown so should worry of the fuse it self.. change of battery come with different spefc for the ups.. eg su3000rmi3u, sua3000rmi3u, su3000rmxl3u --- battery replacement is 8 pcs of 12v 7ah. sua3000rmi2u-- 6 pcs of 12v 7ah or 8 pcs 12v 5ah. su3000rminet-- 4 pcs 12v 17ah,
I would suspect "dirty" power to be the cause. You might want to measure & monitor what the voltage levels are that you're getting from that particular mains source. Either it is already below the set threshhold to switch to battery, or it dips below it, and never comes up enough to reach the threshhold to return back to AC power.