Streaks in your iMac screen?

I have about a dozen different colored streaks running down my iMac screen. What causes this and how can I get rid of them?

Probably a hardware failure, it may be the display itself or more likely the graphics card. You need to take the machine in for professional diagnosis to your local Apple Store or AASP.
On the off chance the machine is still covered by AppleCare (you failed to complete a profile se we have no idea what mac you have or the version of OS X it's running) any hardware repairs would be done at Apple's expense.

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Cleaning Your iMac Screen

I have tried things that immediately came to mind, and nothing quite worked like this... So simple!
1. Take a fluffly washcloth (not a scratchy, worn out one), wet it with warm tap water, and ring it out.
2. Have handy a fluffly white cotton T-shirt (again, not an old, scratchy, worn out one), neatly folded with no seams or stitching on the wiping surface.
3. Wipe the screen with the damp washcloth in circular buffing motion.
4. Immediately dry off the screen with the smooth side of the folded cotton T-shirt.
Note: You will need to position your hand behind the screen in order to steady the monitor as you buff the front firmly.
Makes my screen look like brand new everytime!

And then there is Apple's way:
Cleaning Apple products:
http://support.apple.com/kb/HT3226

What do you use to clean your iMac screen?

I bought a bottle of 'screen cleaner'(for computers and cameras.) I spread it on the screen (it looks like hair mousse) and wiped it with soft cloth.... It left marks! I tried it many times but couldn't make it spotless ...
Should I use window cleaner instead ... since the outer screen is made of glass?
Message was edited by: wawalulu

Yes ... 'rub gently' ... that might be the key ...
Thank you, Dennis!

Project iMac Screen to Apple TV?

Does the old Apple TV have the ability to receive screen projections or streaming from my iMac to then be seen on my TV?

Does the old Apple TV have the ability to receive screen projections or streaming from my iMac to then be seen on my TV?
Sure... If you
1) Capture the screen projector and/or streaming content,
2) convert it in an TV compatible compression format,
3) add it to iTunes for management,
4) and sync or serve it to the TV just lake any other content.
There are no shortcuts here. If you want to watch/mirror your iMac screen to a TV then wire the iMac's video output directly to a compatible TV.

IMac screen keeps waking up for no apparent reason

Here's a fun one. So we all know you can put your Mac screen to sleep by pressing controlshifteject on a Mac keyboard. This is what I usually do with my iMac as I tend to have it doing something at night (be it downloading, processing large files, ect.) but lately the screen only seems to want to sleep for about 10 minutes or so before it will turn right back on.
My old MacBook Pro used to do this but you could actually dim the screen right down to zero anyway so it wasn't that big of an issue. You can't do that with an iMac.
I've heard mention that it might be bluetooth related and I am using an Apple bluetooth keyboard and Magic Mouse but it seems to be doing it much more often of late. I thought it might be a battery issue but even with fresh batteries the issue continues.
Anyone know what's going on?

Next time you want to put your iMac screen to sleep, try switching off the Magic Mouse, wait for the notification to come up on the screen telling you the Magic Mouse has been disconnected, wait for it to disappear then press the keyboard shortcut to put the screen to sleep. See if that helps and we'll go from there. If that doesn't help, can you just say wether the screen always turns back on the same time every time?
Hope that helps
David

Can i hook up a new macbook air to my older imac screen that does not have a thunderbolt i/o?

can i hook up a new macbook air to my older imac screen that does not have a thunderbolt i/o? if not - what can i do to view on a larger display? thanks in advance for any help!!!

You should be able to get an adapter that will change the Thunderbolt out to a DVI or HDMI out, and connect that to an external monitor. I am not sure what connection your iMac screen has, or if it even HAS input capability. I know that the 27' iMac BEFORE it was given the Thunderbolt ports had MiniDP input. If your iMac is any older than that one, I am not sure. But the adapter should allow you to output to any DVI or HDMI display, depending on which adapter you get.

Which MacBook Pro screen more closely resembles the iMAC screen?

I know the MacBook Pros come in either matte or glossy. I know the matte reduces glare, but I love the way my iMac looks

The glossy screen for the MacBook Pro closely resembles your iMac screen. Note, glossy screens are preferred for viewing photos since it enriches the colours more.

How to mirror iMac screen wirelessly through a mac mini connected to an hdmi port of HD TV?

I have a new Mac Mini connected to a Sony HD TV. On the same network but in a different room I have my iMac. I can control the iMac with wireless mouse and keyboard from the same room where the TV and Mac Mini reside. I would like to work on my iMac but use the HD TV as my monitor so I can show slideshows and iMovie projects without transferring files to the MacMini first. Is it possible, and if so, how do I go about setting it up?

Your iMac likely supports a higher resolution than the TV does. The maximum standard TVs today use is 1920x1080, and if your iMac is an Intel Core i3 or i5, its own display is at least that high of a resolution. Which model of iMac do you have?
If your iMac is running at least Leopard (10.5), then both machines have Screen Sharing built in. It can be accessed from the Finder, but as often as you would like to use it you should go to Macintosh HD > System > Library > CoreServices and drag it (the icon) to your Dock. That will create the shortcut to get to it easily. As I noted before, the built in Screen Sharing VNC software doesn't do full screen, but third party VNC software can. Both machines do not need to be using the thrid party VNC software, just the one viewing - in this case your Mac mini. Chicken of the VNC is a popular free one, fairly easy to use:
http://sourceforge.net/projects/cotvnc/
For more info about how to set up Screen Sharing and how to use the included application:
http://mac.appstorm.net/how-to/os-x/using-screen-sharing-in-os-x-leopard/
Note that you will have to use the settings in System Preferences, regardless of what VNC software you use. Both systems will need to have Screen Sharing settings enabled.

My ipad recognizes my home network but will not connect to the internet. When I click on AirPort/preferences at the top of the imac screen it says..."AirPort has a self-assigned ip address and may not connect to the internet".How can I change ip address?

My ipad recognizes my home network but will not connect to the internet. When I click on AirPort/preferences at the top of the imac screen it says..."AirPort has a self-assigned ip address and may not connect to the internet". If this is the root of the problem,how can I change ip address?
Ipad will connect no problem to other networks.

First thing you need I think is to get your iMac connected to the Internet.
Shut down your iMac and you iPad. Then power off your router. Wait 30 seconds and power up the router.
After the router indicates that it is connected to the Internet then start up your iMac and see if it connects. If the iMac connects to the Internet then your iPad should too.
If this power up sequence doesn't work you'll have to dig into the router setup to make sure it is working properly.

How do you get your iMac to show video (or mirroring) with Apple Tv...please help!

I have searched this forum, read the articles here and on Google and I still can't figure this out. Perhaps what I'm wanting isn't possible.
All I want to do is watch my CBS show from www.cbs.com on Apple Tv via my iMac. The Apple TV moniker is next to the volume in iTunes, and I can play music through Apple Tv via I-tunes and have it play on my TV. Thus, I know it is connected and working. I thought I could do a mirror screen like I do with the iPad, but for the life of me I can't find anyone who has covered the subject online.
Can someone tell me, step-by-step, how to show video from my iMac onto my Apple TV. Thanks so much!
Confused in the Lou

If the specs you included about your iMac model are correct, it will not support AirPlay mirroring. See About AirPlay Mirroring in OS X - Apple Support for more about this, including the list of supported models & required OS X versions.

I have a Thunderbolt iMac 27" with a Thunderbolt Display attached. I would like to use the iMac and Thunderbolt display in Target Display Mode for my new Thunderbolt MacBook Pro. So far, it seems I can only use the iMac screen itself. How do I do this?

When I press the Command + F2, the iMac screen becomes a secondary for the MacBook Pro, and the Thunderbolt Display becomes the primary screen for the iMac. I was hoping that both screens would become secondaries for the MacBook Pro. Does anyone know how I should proceed? I have tried to connect the Thunderbolt display directly to the MacBook Pro, and the iMac to the Thunderbolt Display via the separate Thunderbolt cable, but there was no difference. And since the MacBook Pro only has the one Thunderbolt port, I'm not sure how to proceed.

Yes, eww, the language definitely states two thunderbolt displays, but I can understand the confusion and was siding with how they could make the mistake to think it would work like they want it to. My appologies for not being clear on that point, but I think you make it clear that the language in the ad says nothing about an imac.
Having said that all the language about TB would suggest that this would be possible. http://www.apple.com/thunderbolt/
High performance on display.
Thunderbolt I/O technology provides native support for the Apple Thunderbolt Display and Mini DisplayPort displays. It also supports DisplayPort, DVI, HDMI, and VGA displays through the use of existing adapters. So you can connect your Apple LED Cinema Display or other display, along with multiple high-speed devices, all from a single port.

How can i see my Imac screen on my macbook pro wireless

How can i see my imac screen on my macbook pro wireless

When posting in Apple Communties/Forums/Message Boards.......It would help us to know which Mac model you have, which OS & version you're using, how much RAM, etc. You can have this info displayed on the bottom of every post by completing your system profile and filling in the information asked for.
CLICKY CLICK-----> Help us to help you on these forums
***This will help in providing you with the proper and/or correct solutions.***

How to i fix a flicker on my iMac screen?

My imac screen has just started flickering. I have researched it and it already a promblem with other mac's. How is this problem fixed? Thanks

You could reset the pram and smc to see if that helps. I would however suggest if the machine is within waranty you contact your local Apple store as this sounds like a hardware fault to be honest.

How to keep iMac screen black while keeping secondary monitor running for visual experiments in Matlab

Hi,
I'm trying to run a visual experiment using PsychToolbox in Matlab.
I've attached a secondary monitor to my iMac for this purpose and I'm having difficulties trying to
'black out' the iMac screen.
I need the secondary monitor to run at a refresh rate of 120Hz and at linearised luminance (did this for my secondary monitor),
so I can't really use my iMac screen. However, i need my iMac screen to be darken out because I'm doing a vision experiment.
I tried dimming my iMac screen but it doesn't go completely dark. I tried Ctrl+Shift+Eject (or was it Command) but it will darken both
monitors. I also tried mirroring, but it doesn't seem to work too.
I'm really stuck and any ideas will be greatly appreciated!
shui
NB:I'm using OS X Version 10.8.3.

I do not know the details of your experiment, but creating a black monitor is not difficult. For example a completely black page, e.g. in Power Point, set to fill the screen?
The advantage of doing this with PP is that you can move in to or out of the black page with just the space bar. You can set up your monitors so PP is displayed on just one monitor.

24" iMac screen mist behind glass

For a couple of months now my 24" iMac screen keep misting up behind the glass around 30 mins after booting - anyone know a resolution for this? Will Apple replace the screen even though i've had it around 4/5 years now?

scottycross wrote:
For a couple of months now my 24" iMac screen keep misting up behind the glass around 30 mins after booting - anyone know a resolution for this?
It is common to get condensation between the display and front glass panel, if it is humidity and cool in your office or home.
A few things that you might try, are
1. Reduce the level humidity with a dehumidifier.
2. Leave the iMac on longer until the condensation dissipates.
3. Remove the front panel yourself and clean between the display and glass.
Will Apple replace the screen even though i've had it around 4/5 years now?
No, but if you contact your local Apple Store or AASP you can schedule an appointment to have it dried and cleaned.

Streaks in your iMac screen?

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