I had 3 identical UPS (by Best) that failed withing 6 months of each other. I had these for about 4-5 years, so they last about as long as my also lead-acid car batteries. Over two months, as those UPS failed, I saw the destruction of several attached computer devices: 1. On the first UPS, a $300 DSL router was destroyed, and 2 webcams were destroyed. 2. On the second UPS in another room, a $1200 postscript networked inkjet printer was destroyed. I gather that as UPS batteries fail, the batteries can even switch their polarity. I concluded that an UPS will save electrical equipment in the short term, but if you don't change your UPS batteries every 4-5 years, then YOUR UPS ITSELF WILL DESTROY ELECTRICAL EQUIPMENT IN THE LONG TERM. I ordered a new pair of batteries from my UPS manufacturer, then noticed that they used a new brand of batteries by Panasonic (same size), so I became willing to use compatable batteries in my UPS. My second and third set of UPS batteries I got for about $15 each at http://www.gotbatteries.com/cross_ref/slabattery/SLACross.htm which has a cross reference for batteries (look at the label on the battery in your case). You might also be able to look up your UPS battery in their table http://www.gotbatteries.com/products/upsbackups/UPSModel.htm but actually looking at your battery is more assuring. You can also see a cross reference of batteries at http://www.batteriesplus.com/crossups.html The following Finnish website rather thoroughly covers "Electrical Wiring Surge Protection", http://www.hut.fi/Misc/Electronics/surge On Wed, May 07, 2003 at 08:31:23PM -0500, ZephyrQ wrote: > > For the past few months, my UPS has 'blinked out' on me. The rest of > the power in the house was fine, but the items plugged into the UPS have > tripped, causing the usual confusion and 20+ minute boot up sequence (12 > partitions, 90+ Gigs of hda/b including manually running fsck on my /var > partition). > > Can anyone help me figure out whether to buy a new UPS or not? This > problem is fairly recent as I have had the UPS for about 3 years. > > Also, my XFree86 (ver. 4.2.1) acts strange after these 'episodes'. > When I 'startx' after the above sequence, the computer locks up--causing > another manual hardboot and the above (lather, rinse, repeat). This > includes re-running xf86config, restoring previous config files, etc. > > The only way it *does* work is if I let the machine sit 24+ hours. > Then everything is peachy. > > What is going on? And why do I have to *always* fix /var manually? > > --running Woody 3.0 (not the latest...slow connection and all). > -- Jameson C. Burt, NJ9L Fairfax, Virginia, USA jameson@coost.com http://www.coost.com
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