I have a i-Ball UPS.
It was working flawlessly for 4 years but one day, during Power Cut, it didn't provide any backup and turned itself off as soon as power was cut. Now when I try to turn it on by pushing its switch, neither the LED turns on, nor the buzzer beeps. I thought that it might be a battery issue so opened it and checked its 12V 7AH battery. My multimeter gave a reading of 12.98 Volts which I guess says that battery is good. So, what might be the reason its not turning on ?
PS : None of the components on the PCB looks burnt. All look okay.
It was working flawlessly for 4 years but one day, during Power Cut, it didn't provide any backup and turned itself off as soon as power was cut. Now when I try to turn it on by pushing its switch, neither the LED turns on, nor the buzzer beeps. I thought that it might be a battery issue so opened it and checked its 12V 7AH battery. My multimeter gave a reading of 12.98 Volts which I guess says that battery is good. So, what might be the reason its not turning on ?
PS : None of the components on the PCB looks burnt. All look okay.
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