APC Su3000inet charging problem
Hello everyone!
I just bought APC Ups3000inet which is not charging batteries. Ups was delivered without batteries so I just bought 4x12v 17aH connected them in series 2x24v and..... Nothing.
So I look inside and begin to check resistors and caps.
Of course R38 and R43 was fried but still managed to be 0.500k ohm so I have replaced them for 1k which is in schematic and all caps besides AC ones 1500uf/75v X3.
When Ups have connected batteries and I plug it into AC it falls in some kind of bootloop I can hear relays clicking and nothing happens I have to click shutdown and then power at front panel and then Ups is turning on reporting 1 bar of battery charge and is not charging of course when it's plugged into AC and working I can power on a heater through UPS and it's working fine. Just not on batteries. When I disconnect AC Ups dies immediately.
I have connected UPS to hyperterminal and have managed to change battery replace date and check battery charge voltage and ups is reporting 27.07v and reports battery voltage 0.000
Shouldn't be battery charge voltage 55v for 2x24v ?
I I'm sure person before me wasn't doing anything in hyperterminal or in eeprom.
After spending two days I did factory reset through hyperterminal. Of course nothing besides battery charge voltage didn't change. Now it's 12.9v...
I have checked every single solder path to be sure I didn't destroy anything when replacing caps but everything is still the same before and after replacing caps and resistors.
Battery connectors checked
When I hold TEST button it reports 3 bars on battery charge after button release 1 bar and blinking
Battery voltage 26.50v x2
Voltage from batteries is going fine to MB and read 52v
Any suggestion would be very helpful
I just bought APC Ups3000inet which is not charging batteries. Ups was delivered without batteries so I just bought 4x12v 17aH connected them in series 2x24v and..... Nothing.
So I look inside and begin to check resistors and caps.
Of course R38 and R43 was fried but still managed to be 0.500k ohm so I have replaced them for 1k which is in schematic and all caps besides AC ones 1500uf/75v X3.
When Ups have connected batteries and I plug it into AC it falls in some kind of bootloop I can hear relays clicking and nothing happens I have to click shutdown and then power at front panel and then Ups is turning on reporting 1 bar of battery charge and is not charging of course when it's plugged into AC and working I can power on a heater through UPS and it's working fine. Just not on batteries. When I disconnect AC Ups dies immediately.
I have connected UPS to hyperterminal and have managed to change battery replace date and check battery charge voltage and ups is reporting 27.07v and reports battery voltage 0.000
Shouldn't be battery charge voltage 55v for 2x24v ?
I I'm sure person before me wasn't doing anything in hyperterminal or in eeprom.
After spending two days I did factory reset through hyperterminal. Of course nothing besides battery charge voltage didn't change. Now it's 12.9v...
I have checked every single solder path to be sure I didn't destroy anything when replacing caps but everything is still the same before and after replacing caps and resistors.
Battery connectors checked
When I hold TEST button it reports 3 bars on battery charge after button release 1 bar and blinking
Battery voltage 26.50v x2
Voltage from batteries is going fine to MB and read 52v
Any suggestion would be very helpful
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