Has this happened to you ever?

[zerocool]

i read it.... but dres no connection between ur case and da thn i said here ne??

i think it is a problem in your ups....

 

[Anusha]

i think it is a problem in your ups....

In your case, it could be that the UPS has deteriorated its battery pack. But if you get resets when power goes on or off, then it's related more to the power supply unit.

 

[Novindu]

i think it is a problem in your ups....

hmmmmmm.......

 

[HishamZz]

I doubt whether there any inefficiency in the powersupply dude.. i ve swapped ma ups wit a more powerful one and no probz.. though the part bout the ups exploting the switch time is good info, the problem underlying in most scenario is underpowered UPSs.. while ya prob would relate 2 da power supply maybe.. da rest o da guys undergo probz as a result o da number o devices they connect...

ma older UPS when on battery goes on a resetting frenzy just in case I off n on the monitor... it is more about the drawing of power than switching in ma case.. mind ya UPS r way more quicker than home based inverters in the norm.. so switching is extremely fast..

though i stil dont get ya prob bro.. ya mentioned that the computer went off under stress use whilst direct power supply or UPS?

Zz

 

[Anusha]

I doubt whether there any inefficiency in the powersupply dude.. i ve swapped ma ups wit a more powerful one and no probz.. though the part bout the ups exploting the switch time is good info, the problem underlying in most scenario is underpowered UPSs.. while ya prob would relate 2 da power supply maybe.. da rest o da guys undergo probz as a result o da number o devices they connect...

ma older UPS when on battery goes on a resetting frenzy just in case I off n on the monitor... it is more about the drawing of power than switching in ma case.. mind ya UPS r way more quicker than home based inverters in the norm.. so switching is extremely fast..

though i stil dont get ya prob bro.. ya mentioned that the computer went off under stress use whilst direct power supply or UPS?

Zz

This problem I'm talking about is only related to the switching system. There could be other problems with UPSes.

The PC was under a lot of stress while the power went off/back on. One occasion, I was playing Doom3, once I was encoding a DVD, once I was rendering a Maya animation. That last one is so bad!!! You know how long it takes to render a video a in Maya.

The thing is, the hold off time is related to the load of the system. (because higher the power drain from the capacitors -while the power is already out - lower the hold off time) Most high quality power supply manufacturers put it in their Power Supply Unit's specifications, and this is not the typical hold off time. They put the hold off time at max load. New UPS all have a faster switching time than that hold off time of those power supplies.

 

[fazaal24]

i think your UPS is not charged well......

 

[Anusha]

i think your UPS is not charged well......

It's charged alright.

 

[zCexVe]

When you do something that stresses the PC (gaming, rendering, encoding etc.) and when the power goes off, even if you have a UPS, the PC might reset/turn off. Or the PC could reset/turn off when the power comes back on.

Has this happened to anyone? Have you found a solution for it?

Because it drags more power [more As] it resets.There is no way u can stop it.Or try buying a UPS with LCD,password protection,and other things for about 3 lakhs.This will stand by for about 15-20 hours

 

[eranda]

Ya i too fased that problem....itz a problem of ur UPs

 

[malkavi]

I faced to this prob also...
Its a problem with ups. And also some power sups has this problem. But you cant check this by turning off the main switch. this happened only when power cut occurs.

 

[zCexVe]

yeah,yeah coz of the too much load.Try to use a 1.2 KVA or higher one.Or just dont use a one like me

 

[sridanu]

A normal UPS is capable of handling a 17" monitor easily. Just that you shouldn't turn it on if it's already off, while the PC is running on power provided through the UPS' battery. Sure, it will lower the uptime of the PC because of the high power draw, but it should not restart the PC.

But the thing is, this happens with other UPS as well - not even the same brand. I have already changed this UPS telling them that there is such a problem.

My UPS is a PowerTree S600B btw.

i hav 2 disagree. I had to change my UPS sevreal times becoz of the 17" monitor. Finally i found 1 that could handle the power use of the monitor

 

[Anusha]

Because it drags more power [more As] it resets.There is no way u can stop it.Or try buying a UPS with LCD,password protection,and other things for about 3 lakhs.This will stand by for about 15-20 hours

Damn it, why don't you read all the posts before replying? I have already mentioned that I have found a solution.

 

[zerocool]

Damn it, why don't you read all the posts before replying? I have already mentioned that I have found a solution.

 

[Anusha]

Ya i too fased that problem....itz a problem of ur UPs

I faced to this prob also...
Its a problem with ups. And also some power sups has this problem. But you cant check this by turning off the main switch. this happened only when power cut occurs.

Problem is with the power supply unit

 

[Anusha]

What are you laughing at?
Just kidding

 

[zCexVe]

Damn it, why don't you read all the posts before replying? I have already mentioned that I have found a solution.

do u think a dial-up connection loads and refreshes all the posts that much fast?Dream on???????

 

[zCexVe]

What are you laughing at?
Just kidding

oh thanks anusha ayya for saving me

 

[Anusha]

do u think a dial-up connection loads and refreshes all the posts that much fast?Dream on???????

And you think this is my fault?

 

[zCexVe]

Oh ok. Seems like I'm the only one having this problem in this whole community.

I have solved this problem however. Just wanted to know what you thought about it and help others if they have this problem too.

It wasn't the UPS!!! It was the power supply.

Every Power Supply Unit has a thing called hold back time (the terminology may slightly differ however). This shows how long the power supply can hold PC working, even after the power fails. Obviously this is int milliseconds. This is what an UPS exploits when switching to the battery. The Power Supply Unit's hold back time should be longer than the UPS' switching time.

The hold back time is determined by the capacitors inside the Power Supply Unit. When a bigger load current is drawn from the capacitors, they discharge quickly, and the hold back time will dip. That's why it might reset the PC when doing a stressful task, than when lying idle.

The generic power supplies we get in Sri Lanka for around Rs.1,500 or even less are not good. Their hold back time maybe be enough when no so much power is drawn from the power supply, but once a high power is drawn, the hold back time will go down tremendously.

I don't think the UPS we get for around Rs.4,000 are bad. But a faster switching UPS would have been able to cancel the incapabilities of the power supply unit, but by how much?

I had to buy a good power supply to get rid of this ghastly problem. This is a server power supply (well, that's what they call it), and I had to spend Rs.5250 on it. It's still not the best by all means, and enthusiasts will call this a very low end power supply unit. But at least, I got my problem solved by buying this power supply.

I disagree with ya.When rendering videos i used to bring in my neighbour frnds ups.with my earlier pc it resetted.But sometimes in my new one too it resets.My new one has a 500W PSU which can hold a Sine curve [approx 1/25 secs].but it still resets can u have me an answer?