Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 3 1 2 3
Will a power failure damage a running projector ?
#146987 09/03/06 02:05 AM
Joined: Aug 2004
Posts: 6,379
Likes: 7
axiomite
OP Offline
axiomite
Joined: Aug 2004
Posts: 6,379
Likes: 7
So... it's the dark and stormy night of literary fame. Cold, dreary, a perfect night for vacuuming the house and carrying junk down to the basement (ick, did I say that, I meant watching movies).

The power has flickered out for a second a couple of times, not enough to take down the PC but enough to make me think about all the rumours regarding power failures damaging a projector -- specifically, losing the fan cooling during the powerdown period and thereby damaging the bulb.

What do you think -- is this real, or urban legend ? There does seem to be some possible credibility to the "don't switch a hot filament back on again before it cools" warning, but I'm not sure about that one either.

Advice appreciated. Sony PLV-Z4, of course, running in "Creative Cinema" with the lamp over-ridden to "eco" ie lowest power.

Last edited by bridgman; 09/03/06 02:37 AM.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
Re: Will a power failure damage a running projector ?
bridgman #146988 09/03/06 03:20 AM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
Very good question John, I would be interested in the feedback as well. I think it has come up on AVS before, but the answers varied as wide as the "speaker break in" topic.

I know my basement HT stays relatively cool all the time anyway, and I'm not sure my fan runs much anyway after shutdown. So maybe in this situation it would not be a big deal. I know that I run my Z2 in low lamp mode, not that this matters.

Randy


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Will a power failure damage a running projector ?
bridgman #146989 09/03/06 03:47 AM
Joined: May 2002
Posts: 10,654
shareholder in the making
Offline
shareholder in the making
Joined: May 2002
Posts: 10,654
John, this came up recently on Jason's(zarak)thread about his new TV. The facts appear to be that when the power goes off, both the TV bulb(if any)and the fan cooling it go off simultaneously. Since the bulb is off no additional heat is added and it doesn't get any hotter, it just takes longer to cool down than if the fan continued to run after a normal shut-off. No appreciable amount of extra wear-and-tear occurs. Restarting the bulb while still hot(e.g. if the power returned quickly)is said to be very harmful and most if not all display devices using bulbs are supposed to have temperature sensitive protective circuits to prevent this.


-----------------------------------

Enjoy the music, not the equipment.


Re: Will a power failure damage a running projecto
JohnK #146990 09/03/06 05:24 AM
Joined: Apr 2003
Posts: 16,441
shareholder in the making
Offline
shareholder in the making
Joined: Apr 2003
Posts: 16,441
Indeed. I can vouch for that protective circuitry. I was involved in a training course on Friday at work and someone tripped over the projector's power cord, pulling it out of the floor jack. It took quite some time for the bulb to light up after restoring the power. Not sure of the model but it was a relatively new 3M projector.

Re: Will a power failure damage a running projector ?
bridgman #146991 09/03/06 11:15 AM
Joined: May 2002
Posts: 1,177
connoisseur
Offline
connoisseur
Joined: May 2002
Posts: 1,177
John, these Uninterruptible Power Supplies (UPS) are not that expensive, and will buy you enough time to power down. At $99.00 it's pretty cheap insurance to protect a $400.00 bulb. Shoot, my neighbour is even using a larger one on his sump pump.

Don't forget to check out the detailed specs and reviews.


Shawn

Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.
Re: Will a power failure damage a running projecto
pmbuko #146992 09/03/06 12:54 PM
Joined: Jan 2004
Posts: 13,840
Likes: 13
shareholder in the making
Offline
shareholder in the making
Joined: Jan 2004
Posts: 13,840
Likes: 13
Quote:

someone tripped over the projector's power cord




Someone?

Yeah, there is this guy that is a friend of a friend of a cousin of mine, he has a drinking problem, where can he get help.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: Will a power failure damage a running projecto
SirQuack #146993 09/03/06 10:09 PM
Joined: Apr 2003
Posts: 16,441
shareholder in the making
Offline
shareholder in the making
Joined: Apr 2003
Posts: 16,441
Hey man, I was just sitting in the back of the room, observing. The lady who kicked the power out was british and you should have heard her apologize profusely.

"Oh my, I'm so dreadfully sorry."

Re: Will a power failure damage a running projecto
pmbuko #146994 09/03/06 10:29 PM
Joined: May 2003
Posts: 18,044
shareholder in the making
Offline
shareholder in the making
Joined: May 2003
Posts: 18,044
A likely story from a Colonist. Absolutely shocking! I've never heard anything of the sort.


I am the Doctor, and THIS... is my SPOON!
Re: Will a power failure damage a running projecto
bridgman #146995 09/04/06 04:55 PM
Joined: Feb 2006
Posts: 6,471
axiomite
Offline
axiomite
Joined: Feb 2006
Posts: 6,471
Bridgman, thanks for asking a question that I have been wondering about lately. Now I may not worry as much.


Bears, beets, Battlestar Galactica.
Re: Will a power failure damage a running projector ?
bridgman #146996 09/05/06 01:54 PM
Joined: Oct 2005
Posts: 853
aficionado
Offline
aficionado
Joined: Oct 2005
Posts: 853
I'd worry more about the flickering than the actual shutdown because of the power surges. I'm sure you are using a surge suppressor but they have their limits. I had a board fail in my Sim projector in June which the technician attributed to large surges. It may have been caused by the huge power demands during that very hot spell. A really good surge suppressor is cheap insurance and its worthwhile to know their specs. Call me cautious, nowadays I don't leave the projector on standby but shut the power off completely.


John
Page 1 of 3 1 2 3

Moderated by  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,940
Posts442,457
Members15,616
Most Online2,082
Jan 22nd, 2020
Top Posters
Ken.C 18,044
pmbuko 16,441
SirQuack 13,840
CV 12,077
MarkSJohnson 11,458
Who's Online Now
0 members (), 386 guests, and 4 robots.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4