UPS not taking backup power

[Trave160]

Well it seems my PowerTree 1250VA isn't taking backup power, everytime electricity outages happen. UPS just shutdowns fast, charged it from 3-pin socket. This UPS has been behaving oddly for quite a while now, anywhere close to Uttara where I can get this fixed?

- - - Updated - - -

Wth, nobody is going to respond? Newbies come and they get responses within 2hrs. Are you F.U.C.King kidding me?

[Swapnil]

I think I have already gave you an answer (at least a suggestion) on the other thread. Sorry, I cannot suggest any place in Uttara. In fact I don't know exactly where Uttara is .

BTW, if you fail to fix it, would you be interested to sell it to me as a junk? I'll pay 1/4th of it's market price.

[minitt]

Well it seems my PowerTree 1250VA isn't taking backup power, everytime electricity outages happen. UPS just shutdowns fast, charged it from 3-pin socket. This UPS has been behaving oddly for quite a while now, anywhere close to Uttara where I can get this fixed?

- - - Updated - - -

Wth, nobody is going to respond? Newbies come and they get responses within 2hrs. Are you F.U.C.King kidding me?

be more descriptive in explaining your problem for better response.

[Trave160]

As I said before, it's not making backup power inside. It instantly shuts down when current goes out, either the battery is dead or something is really wrong. There are other malfunctions in as well, @Swapnil you said you got yours fixed from Superior Electronics, do they need the warranty only or I can pay for repairs without a hassle? I bought it second hand and I didn't get the papers for warranty

[MusharratC]

I needa fix mine too. My warranty ended on february. :/ sedlaip.

Btw, what problem is your one having? Mine makes a loud buzz noise whenever any load is put on it.

[minitt]

offline/line interactive ups is fairly simple to diagnose. for more than 1.5 to 2 yr old units , it's not even worthwhile to fix since the inverter itself becomes weaker. So getting new battery for a worn out circuit is a waste of time n money.

i would only go for battery replacement if the unit is less than 1.5 yrs old for typical cheap brands/ from a reputed brand/ online ups.

Try getting a multimeter. While charging, if the battery terminal voltage quickly reaches 27.3 V ( for dual batt) or 13.6 for single batt then u need to replace batt.

typically it needs about 7- 8 hour to reach 27.3 V ( for dual batt or 13.6 for single batt) for a good battery to reach almost full charge from empty.

another test that you can do is when you disconnect power and ups is on batt, lit up a 200watt bulb or or run ur pc which ever is convenient, and see the voltage drop at battery terminal.

with load if the terminal voltage quicky drops below 23.5V dual batt or 11.75v single batt then u have a weak batt. ( assuming u are doing this test with full charged batt that are charged for at least 7 hour.

u can simply skip all test if u see ur batts are swollen

[Swapnil]

As I said before, it's not making backup power inside. It instantly shuts down when current goes out, either the battery is dead or something is really wrong. There are other malfunctions in as well, @Swapnil you said you got yours fixed from Superior Electronics, do they need the warranty only or I can pay for repairs without a hassle? I bought it second hand and I didn't get the papers for warranty

I just called ahead and went to their multiplan shop, took my damaged circuit with me so that they can recognize the revision of the board, they gave me a new circuit, came home and plugged it back inisde the UPS. And the problem you are saying is the exact same as my Previous RA UPS was showing, before I threw it out. Took it once to the RA service center, and they said it was battery problem. But I threw it out anyways because that "Battery Problem" killed two LCD monitors.

[Trave160]

I just called ahead and went to their multiplan shop, took my damaged circuit with me so that they can recognize the revision of the board, they gave me a new circuit, came home and plugged it back inisde the UPS. And the problem you are saying is the exact same as my Previous RA UPS was showing, before I threw it out. Took it once to the RA service center, and they said it was battery problem. But I threw it out anyways because that "Battery Problem" killed two LCD monitors.

Sorry for your lose, damn that sucks there needs to be a blacklist for UPS

Also how much did new circuit board cost you?

[Swapnil]

Sorry for your lose, damn that sucks there needs to be a blacklist for UPS

Also how much did new circuit board cost you?

1.3k.

[redwan hasan]

So apparently "the great" "PowerTree" UPS is not that great after-all.

- - - Updated - - -

Do some tests and figure out what actually happened, like see if it can cold start an appliance without AC input!