UPS issue

MM0086

i recently bought a new tv , sony bravia ex500 46 inch with a power consumption of 195 to 240W, and i have a PCE ups xp pro 1200 va / 720W. now this same ups i used to have on it a ps3 40gb alone or a bravia V series 40 inch and they used to work very well. however when i plug the new tv the ex500 the ups which is 720 W isnt handeling this Tv,the UPS doesnt goes off , because i have a router around 20 W on it and it keeps working but the TV only goes off, when electricity switches.

Also the v series 40 inch is around 160 to 200 W and works on a 480 W ups, while when i plug the 46 inch on a 480 W ups , the ups turns off directly.

so any advice, is this tv really like they said 195 to 240 W , and isnt it 720 W enough for that kind of tv. is my ups messed ? or should i upgrade to a bigger one?

also in my ups theres a normal ups output outlet and a surge outlet , which one should i use ?

another question, if i dont the tv on a ups , and when electricity goes off and on will this harm the tv ?

10x in advance

btw im new here..

WizaRd

I have the PCE UPS Vista Series 800VA / 480W and it handles fine my 32'' Bravia TV + slim PS3 (which is a hell lot of power consumption than yours) + 1 switch and a satellite receiver just fine for well over 5 mins (longest time it took for power to come back) and none of the said components decided to turn off.

To answer your other question, I believe LCDs are very sensitive to power cuts and their panel would get very bad in the long-term if you don't have a UPS connected.

westom

MM0086 wrotei recently bought a new tv , sony bravia ex500 46 inch with a power consumption of 195 to 240W, and i have a PCE ups xp pro 1200 va / 720W. now this same ups i used to have on it a ps3 40gb alone or a bravia V series 40 inch and they used to work very well. however when i plug the new tv the ex500 the ups which is 720 W isnt handeling this Tv,the UPS doesnt goes off , because i have a router around 20 W on it and it keeps working but the TV only goes off, when electricity switches.

Some of the 'dirtiest' power an appliance may see comes from a UPS in battery backup mode. Dirty power that is harmful to small electric motors and power strip protectors. And ideal for most all electronics. Sometimes that UPS power is so dirty as to confuse power factor correction circuits inside newer appliances.

Why is that TV on a UPS? Does the LCD screen get hotter when power is removed? Or course not.

When power is first removed, the warm screen is more susceptible to damage from movement. Let the screen sit without power. It will cool slowly and without damage.

Remove the TV power cord from the surge protected outlets. Then connect it to the same wall receptacle used by UPS. You have not changed the connections - electrically. If that UPS is doing surge protection, then everything in the room on that same circuit has the same protection.

Nothing adjacent to a TV does surge protection. Only effective protection is, well, where do hundreds of thousands of joules dissipate harmlessly? Inside that UPS protector circuit that is hundreds of joules? Or did you just let them tell you how to think without numbers? How do hundreds of joules in a UPS protect from a typically destructive surge that is hundreds of joules of joules? It doesn't. They need you to never ask for numbers.

UPS has only one function. To provide temporary and 'dirty' power during a blackout.

julien_saadeh

Use the UPS output not the Surge Protection. If it was a UPS issue, it would have shut down.

And as westom said, maybe the new TV doesn't like the UPS's "dirty" battery power so it simply would refuse to work.

Xsever

Well said westom.

The TV's circuitry is detecting "dirty" power on the input and therefore not allowing the TV to turn on. More like a protective feature.

westom

Xsever wroteMore like a protective feature.

Not a protection feature. All appliances contain serious transient protection. Anything that might protect on its power cord is already inside the TV. But that rumored PFC confusion is not a protection feature.

Power factor correction (PFC) means monitoring an incoming voltage and current sine wave. Then compensate for delays. Cannot happen if waves are so 'dirty' – ie a spike between square waves or ‘stepped’ sine wave. Square waves are a sum of many sine waves. Which one would it monitor? Instead it might compensate by providing too little power. All electronics either work normally with less voltage or simply turn off. Many sine waves – the result of dirtiest power often output by a UPS - may simply confuse that PFC circuit into reducing available power excessively - causing a turn off.

UPS does not do effective surge protection or 'clean' power. Best circuits are already inside electronics. Newer designed power supplies can be confused by power 'dirtire' than anything found on AC mains. Not a protection feature. A UPS creating ‘dirtiest’ power may harm small motors, does not harm electronics, but can confuse PFC circuits.

Anything that can overwhelm protection inside appliances must be solved before wires enter a building. An effective solution that costs tens or 100 times less money. Then protection inside every appliance is not overwhelmed.

pnrk4u

Hi, I have a similar problem as this one:http://www.lebgeeks.com/forums/viewtopic.php?id=7305. I just bought a Sony Bravia NX500. My TV is switching off when my UPS turns on. I read the post, and understood that it is dirty power. Is there any way that I can use a Voltage Stabilizer and watch TV Uninterruptedly?

Please help me with the Name or type of the stabilizer i should be using (which are available in India).

Thanks,
Ram