Mother boaed for my 41/2 year old computer is fried.
I am told that particular mother board is no longer available through regular retail channels. Is it worth trying to find that particular model on ebay or other net sources? If so, is it much of a chore to install a relacement board?
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With the ones that I have seen the ups units have a relay that routes the 110v thru the unit when it has 110v power applied. If you are saying it has no output on batteries only then you may be right about the inverter. SAFELY I would just verify on the board that the DC input from the batteries is correct to test your install. It seems there may be a RS232 DB-9 connection on them with available software for communication with them, if it does I would try it.
The best processor on the market right now is the Intel core I7. If your looking for a new computer, an I7 or an I5 would probably work best for you if you want it to last. If your looking for a gaming computer, try to get one with a graphics card that is at least an Nvidia 460 or an ATI 6770.
A little research on the internet will answer your questions about battery replacements and cost. There are numerous sites selling batteries for your particular unit. Do a Google search on the battery type and see what you get. EBay is another possible source for batteries once you determine which size and what ratings you need for your replacements. The best way of determining how to replace the batteries is to open the UPS's case and carefully record how you remove the old batteries and then install the new ones in reverse order. You will have to open the UPS up to get at the batteries to determine type and specs so removal and re-installation should be easy from there.
These type of UPS's put out a simulated sine wave on battery power. When you test these with a regular voltmeter, it tries to read it as a pure "rounded" sinewave and will nearly always report 80 volts, instead of 120 volts. If you test it with a true RMS voltmeter you'll see that it is 120. Otherwise, these units are getting older and the batteries need to be replaced every 3-4 years. Here's a link to a replacement battery: http://www.batteryinternational.com/cyber-power-cps585avr-ups-battery-ups-batteries-f1.html
Have you tried to use the pen drive in another computer. If the pen drive does not work in another pc then this pen drive could be fried. There is whats called "Safety Removal Hardware" This should be used before removing any hardware from the pc. Also have you ensured that all the updates have been carried out on that computer?
The battery will have to be changed if you want to keep the old one.
What i've seen mostly here in south africa. When the battery life has ended they customer opens the ups and takes out the battery and then connects a car battery to the terminals. The then close the ups and let the car battery stand outside the ups.
If you can't turn your computer on when you plug it into the UPS (and the UPS is turned on and plugged in) then there probably isn't anything you can do to fix it. However, if you can turn your computer on, but the UPS doesn't keep it on when the power goes out, you might be able to just replace the battery in the UPS. Typically the batteries in UPS's only last 2-3 years.
You need to replace the battery in your UPS. I went to the mfg. to find your model but i was unable to find the model you had posted. You should be able to take the battery out and go to a retail place like battery plus to get the battery you need. If not you may be able to get it from the manufacturer.After replacing the battery you should fine.Here is a link to the web site. http://www.dynexproducts.com/c-6-surge-protectors-and-upss.aspx