Recommended sleep time for Cinema HD display

I have a new 23" Cinema HD display and am curious if there is any information for how many start cycles the display is rated for?
It seems like cycling the bulb more than three times a day is too much... so the sleep time would be dependent on how the computer is used. i.e., it wouldn't make sense to set it to 90 minutes if I used the computer every 2 hours.
I'm not going to lose sleep over a scientific analysis of my usage patterns; just curious if the new (just got it at the apple store yesterday) 23" displays had any published ratings, etc.
Thanks

Power-cycling the bulbs is definitely not good. Fluorescent lights (like those that illuminate the LCD displays) will last almost forever (but with decreasing brightness) if they are not powered off - the tubes weaken when they are cycled on and off.
I spoke to a friend of mine who is an engineer in a related field to displays, etc... his advice for prolonging the life of the display was to turn the brightness down as low as possible when not in use and avoid turning powering the display on/off more than twice a day... The Cinema displays are rated at 50000 hours at half brightness; at 10 hours of use each day that is over 13 years of use. If you knock off 20% life by cranking up the brightness to 3/4 you're still within the 8-11 year life expectancy of the bulbs (@40000 hrs mtbf).
I don't use my display where I need to make the display more than half way up the brightness scale so i've quit worrying about brightness. I adjusted the computer and display sleep timer to 3 hours and to not let the drives sleep until the machine itself goes to sleep. I use the computer a lot so this 3 hour setting is only set in case I forget to turn it off before going to bed.
But to your original question, you'll definitely fatigue the bulbs prematurely by cycling them on and off. My parents have a single 40W fluorescent bulb wired directly into the 120V circuit, it is on 24x7x365 and never turned off - my dad dates the bulbs and has replaced the bulbs only twice in 23 years. The Phillips bulb lasted 14 years, but the other only 9. In their kitchen they have a 4-bulb fixture and those same bulbs last only about 2-3 years.
The power inverter that powers the fluorescent bulb in LCD displays is the weak link in the chain as they aren't made as durable as a ballast inverter for full size bulbs. Do a search on the net and you'll find numerous pages about technicians finding the inverter in laptops, etc. failing long before the fluorescent bulbs.
... so i'm not going to worry about it getting dim but only concern myself with not powering it on and off more than once or twice a day.
thanks

Similar Messages

Different sleep times for different monitors?

I'm using a iBook G4 12" with an external monitor (spanned, not mirrored), and I was wondering if there's a way for me to set different sleep times for each of the LCD and the external monitor?
Thanks.
- JC

Nope. They all sleep or none sleep.

Set sleep time for multiple hard drives

I have 2 internal hard drives on my mac, one SSD boot drive and an HDD for media.
I would like to have the HDD go to sleep when it is not in use (i.e. when I am not using itunes) which is most of the time.
I have energy saver set to sleep drives when possible, and I have used CHUB Spindown HD to set the sleep time to 7 minutes. As far as I understand though, sleep time applies to both drives (i.e. if one drive is running then it wont sleep the other). This would explain why my HDD always shows active.
Is there way to set sleep times separately for separate drives?
Thanks

Obviously, spin down doesn't apply to SSD's but for others the key phrase is "when possible." Some (usually external) drives ignore system settings completely & spin up or down according to their own internal logic. Typically, some of them automatically spin down after an internally set interval of inactivity & this is cannot be changed. Less typically, some spin up any time they are accessed, even if no actual read or write is requested, usually as a result of how proprietary energy saver features are implemented.
This should not apply to drives Apple has supplied as original equipment, or to almost any "raw" internal drive. However, certain operations keep drives spinning or spin them up, thus resetting the spin down timer, & it it isn't always obvious what they are. With your settings, if you leave the Mac alone for while, does internal never spin down? (IOW, can you hear it running without using any command to check on that?)

How do you set different sleep times for different days?

Energy Saver --> Schedule allows you to schedule start/wake/sleep/shut down, but it doesn't provide very fine grained control. Is there a way to set the computer to sleep or shut down at different times on different days, to wake only on particular days, etc.?

AFAIK, Energy Saver doesn't provide the granularity that you're seeking. Launch the Terminal app, copy & paste this command into the window that pops up, hit the return key, and peruse the underlying documentation for the power management setup process:
man pmset | cat

How to use a sleep timer with iTunes

I just whipped up a little sleep timer for iTunes on request, and wanted to make it available to anyone who was looking for a way to listen to iTunes for a set amount of time and then have it paused (instead of having to make a playlist of a particular length).
You can also have it shut down the computer or put it on stand by after it pauses iTunes.
To download, go here:
http://www.ephpod.com/ast/

I'm having a similar issue: just redeemed a gift card for $25. I can see it in the upper right corner. Yet when I select a song to download, I am (again) asked to sign in and select a credit card to use. I don't want to use a credit card, I want to use the $25 card. This hasn't happened to me before now. If I click the 'redeem gift card' option in the credit card screen, it correctly says that that card has already been redeemed.

Display sleep time

My Display goes to sleep after one minute, no matter what I have the display sleep time set at. Been this way from new.

Hello again glschell,
Thank you for responding to my post requesting additional information. I am providing you with an HP Support document: Using and Adjusting Your Monitor, where you will see under the heading Using Onscreen Display (OSD) the Monitor controls and under Management you will see Sleep Timer which may be the culprit in your issue. Additionally, I am providing you with the steps needed to set your computer's sleep timer:
Step 1. Click on Start
Step 2. Click on Control Panel
Step 3. Click System and Security
Step 4. Click on Power Options
Step 5. Change the conditions of the computer's sleep mode
Now if none of the above works I would recommend that if the issue is really bothersome to follow the steps in the HP Support document: Backing Up Your Files (Windows 7) and back up the personal files on your computer. After you have successfully backed up your personal files you can follow the steps set out in the HP Support document: Performing an HP System Recovery (Windows 7), which will reinstall your operating system and bring it back to how it was when it first came out of the factory. The original image you had on the computer may have been faulty and this will resolve that.
Please re-post if you require additional support. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

Looking for suggestions for a new display: What size, resolution and refresh is recommended?

I've been using my laptop display, 15.6" and its just too small. I figured I'd purchase a display to plug into the laptop. I'd like suggestion on specs. I figured a 20 to 23 inch would work ok but I've seen some folks with dual screens. Lastly, I have no understanding of resoution, refresh rates to look for or brands to either look at or stay away from.
Any help would be great.
Thanks.

The good news is that you don't need to worry too much about the specs -- just about any monitor you purchase will be OK. First choose a size that fits in you work area, then pick the monitor from that range of products that has the highest resolution and refresh rates -- the monitors will all have very similar specs.
I've been using PCConnection
http://www.pcconnection.com/
as my primary source for computer purchases for over 12 years and highly recommend it. They have user's comments for most of their products, so you can get a feel for the satisfaction level of the products.
I've never understood the value of having dual monitors, unless one needs to have a couple of real-time monitoring apps open at the same time for instant feedback about the data....
Ken

What are the normal Boot time?/Wake from sleep time? for MB?

Looking to buy a MacBook for my wife to replace her old Dell D-420. The Dell still works fine but takes forever to boot and to wake from hibernation. I was given an old iBook a few weeks ago and was amazed at how fast it woke from sleep mode (the boot times were pretty snappy too). So my question is. What is the "normal" wake from sleep time on a MacBook? How long does a cold boot take?
BTW: Steve isn't going to surprise us with an updated MacBook next week is he??
Thanks
Soon to be MacBook owner.

lancia is right- 56 second sound about right, my 2.0 GHz MacBook boots in about 49 seconds.
If you want your MacBook to boot up faster, you can reset the PRAM (parameter random access memory). What this does is that it resets all the devices it searches for when it starts up: forgets about them, literally
To do this, press down the command (the buttons next to the space bar) , option, P, and R keys at the same time when you turn on your MacBook. Press these keys until you hear the tone a second time. Make sure to do it quick, because after you hear the tone it won't work.
Hope this helps,
Wookams
To your BTW question:
Almost certainly not, but I still recommend waiting a couple months extra because Apple notebooks usually update themselves every 200 days or so. I was disappointed from learning this, but hey...

Response times for apple displays

Hi,
am in the market for a 20-22" LCD monitor for our G4 machine. Sometime we'll upgrade the machine to a faster intel-mac. I have been hunting around for good deals on LCD's and while most other vendors seem to list their response times, I did not see them for the Apple displays. Any notes on where to find them?
Also am looking at Dell and their response times seem quite slow (15-16 ms) for the 2007WFP or just the FP displays. While Samsung and a host of others are typically below 8ms. I do understand there are "tricky" ways of measuring these number, but 15-16ms seems pretty slow to me, and since my teen agers play a lot of games on the machine, seems like I should go for faster #'s.
That said, any recommendations on other brands? Apple's are very pricey, but nice looking too.
thx
'mark

m_ahienius,
14 ms.
See http://www.apple.com/displays/specs.html
If you can afford a 23-inch display, go for it. I have owned both the 20-inch Apple LCD and the 23-inch. Bigger is better.
The real question is "why do you care about response time?". It is only meaningful for watching movies and playing games. Not for "ordinary" work.
,dave

Risers or Arms for Cinema Displays?

Hello,
I was recently able to alleviate a ton of neck pain by raising my cinema display (23" older acrylic model) to a greater height, and was wondering if anyone else was using lcd arms or monitor risers successfully with their cinema displays. Since I use Word heavily, I noticed that nearly 90% of the time my eyes are focused on the bottom half of the display, so right now i've got my display propped up on three 12-pack soda can boxes. Outside of Word use, I have to raise my neck a little now to see the entire screen, but its still much better than having to keep your neck pinched at a downward angle.
Browsing the archives for "cinema display risers" or "cinema display arms", I noticed this query:
http://discussions.apple.com/thread.jspa?messageID=1102867

There's a few like:
http://www.ergomart.com/AppleCinemaLCDarms/CineCDA2718Details.htm
or
http://www.opentip.com/productinfo.php?productsid=116788
Ain't cheap and it's a very strange looking arrangement what with "those feet" floating off the desktop but it works...

Cinema HD Display: specs for DC power supply

I recently bought the 23-inch Apple Cinema HD Display for the navigation station on our yacht ADAGIO. This lovely display replaced our previous 22" Cinema Display --> the purpose being to reduce the odds of a failure during our next Pacific Ocean crossing.
My unusual question: *what are the voltages supplied to the HD Display by the white power brick*?
I need to replace the brick with 24VDC DC-DC converter, because the new HD Display power brick doesn't like being supplied with 240VAC/50Hz from our modified sine wave inverter. When inverter powered, the display randomly reboots itself --> so you see a black screen, loss of USB to keyboard/mouse for about 3 seconds. I have proven that this fault is completely eliminated by powering the brick via either shore power or our 10kW generator (both are sine wave of course).
The inverter power is the only practical option when we are at sea - we only run the generator for 1 to 2 hours out of 24.
Any ideas how we can find out what the brick supplies? The info is definitely not in the tech specs nor user manual.

Aha - remoting sensing - thanks for that enlightenment.
First, to your point about supplying the brick by a UPS or line conditioner. Yes that is an option. The issues with shaping the power into the brick are:
1. Leaves ACD operation dependent upon 240VAC from some source. So if the inverter goes down, we either run genset or switch to MacBook Pro.
2. Ship's power is already 24VDC, which unregulated varies 26.5 to 28.8. Will that work with adding regulation? The spec on our older Cinema Display was 24.5 to 28 VDC -- I installed a 24V DC-DC converter just to ensure regulation to less than 28V.
3. Not relevant, but it is irritating to buy/install a UPS when we already have a super UPS supplying the ACD I.e., 540 amp-hour gel battery bank -> 3500 W inverter -> ACD.
Have you any recommendations on a 240V conditioner or UPS?

Can anyone refer me to a good repair facility for an Apple Cinema HD Display 23 in? Like other displays of this model, it has an internal short that causes a flickering display.

For several years I have had a flickering or black display problem with my Apple Cinema HD Display 23 inch, model M9178LL/A. Like other displays of this model production it has an internal short that causes the flicker and burns out power adapters. I ahve taken it to the Apple store several times and they just kept selling me replacement power adapters instead of fixing the short. At my recent visit, they told me that they no longer support this model and that I have to find a third party repair facility.
Can anyone refer me to a reputable location who can do the correct repair. There are discussions on the Internet how to work around the short problem with electrical tape on the middle connector pins, or how to open the display to fix it myself, but I do not have the eyesight, skills or equipment to do this correctly.
Thank you.

In continuing my research on this topic, I found this article:
http://support.apple.com/kb/TS5198
Short version, the 23" Cinema HD is among one of several older "vintage" Apple displays that are no longer supported under Mavericks. No brightness control, and it's likely to not work reliably at all. I can't say why I was able to use it for as long as I did with no problems. I take all this to mean that the display itself works fine, but not with my new MBP Retina.
Though a tempting excuse to spend another grand on a 27" Apple Thunderbolt display, I opted for a $250 HDMI monitor from Fry's instead.

HT201263 When my Ipod touch is in autolock I can only restart the device holding the sleep/wake button and home button at the same time for 10 seconds. While in auto-lock it is using battery power and will do so until the battery is drained. Whats wrong

When my Ipod touch is in autolock I can only restart the device holding the sleep/wake button and home button at the same time for 10 seconds. While in auto-lock it is using battery power and will do so until the battery is drained. Whats wrong?

- Try a reset. Nothing is lost:
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears
- Connect the iPod to your computer and try to restore via iTunes. Try placing in Recovery mode if necessary to restore.
- If you can't turn the iPod completely off, let the batter fully drain. After charging for at lerast anhour try again
- If still not successful time for an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.

Is it possible to connect MBPR with Cinema HD Display 30" 's Firewire Port for iSight

I want to buy a external iSight for my old Cinema HD Display 30" ,as i don't have enough space to open my notebook to use the built-in iSight camera.
I know they are very old item, but i think they have very beautiful design and great quality, i want to use them
I have already using the 30" Display by Dual Link-DVI converter, i don't have any firewire device, i don't know is it still work for using Thunderbolt (MacBook) -> Firewire800 (Adapter)-> Firewire400(converter) -> Cinema HD Display FW port -> external iSight
or is there any other solution for me?
or should i give up this setting
As i don't want to use other brand USB camera, other brand no need to consider.
Thanks for attention

mluk6328 wrote: I want to buy a external iSight ... I know they are very old item, but ...
Test BEFORE you buy. More discussion in this old thread: http://discussions.apple.com/thread/2450744 .

How do you display total time for playlist in Itunes 11

how do you display total time for playlist in Itunes 11

"I can see the total time in my playlist on the computer but not on my device??"
I have just posted a question asking the same!
Did you have any joy?

Recommended sleep time for Cinema HD display

Similar Messages

Maybe you are looking for