hi, I have a RS 1500 APC ups , I buy 3 years ago... today stop to work, say overload... (Red alert) I NEVER use sleep for macpro, I put it... when back to sleep PFFFFF the ups off, and when start again overload... (red alert) soo I need a new one, whats the best ups for macpro 08? I dont want that problem again for sleep, I see that back to sleep is hard for ups support (here in my home... I think) any suggestion of what I need buy?
Your battery is shot I think, and are acting as a dead short. What I can't tell, is if it's caused the controller board to blow in the unit. Try disconnecting the battery, and see what the lights do, and consult the manual on battery failure. If the rest of the UPS is still good, you can get replacements (not expensive; definitely cheaper than a new unit), or get a new UPS if it really is toast (not just the battery). I'd stick with APC, so search out the BR1500LCD or the SUA1500. They're BackUPS and SmartUPS models respectively.