IMac hooked up to HDTV - display & colours

Hi
I have hooked up my iMac to my HDTV Panasonic TC 26LX70
It works pretty well, i have 2 issues though:
* Each time i hook up the imac to the hdtv, the display for my imac changes automatically. I tried to find the good setting in systems preferences but so far nothing great. I still have the display of the imac re-initializing eah time
* The colours on the HDTV are not as good as on the iMac screens, they are more "HDTV" like, too bright, too flashy. How can i get the same ones than on the mac?
Please I would appreciate your opinions
Thx

In as much as this is really not a "Using Mac OS X Leopard" forum problem but more of an iMac display issue why not post in the appropriate iMac hardware forum?
http://discussions.apple.com/category.jspa?categoryID=132
You'll have more exposure to folks with similar set ups and equipment.

Similar Messages

  • IMac hooked up to HDTV - display and colours

    Hi
    I have hooked up my iMac to my HDTV Panasonic TC 26LX70
    It works pretty well, i have 2 issues though:
    Each time i hook up the imac to the hdtv, the display for my imac changes automatically. I tried to find the good setting in systems preferences but so far nothing great. I still have the display of the imac re-initializing eah time
    The colours on the HDTV are not as good as on the iMac screens, they are more "HDTV" like, too bright, too flashy. How can i get the same ones than on the mac?
    Please I would appreciate your opinions
    Thx

    If you have it set to +Mirror Displays+ in System Preferences Displays pane Arrangement tab, you should uncheck that setting. Then, the two screens together will show an extended Desktop, as represented in the diagram on that preference pane, and you will be able to set the resolution on the two screens independently. So you can use the optimum settings for each screen; the standard HD resolution for most HDTVs is 1920x1080 (1080p).

  • How can I get a video signal using IMAC 27 with only mini display port. I like to send the signal wireless to a TV using a TV/audio transmit system.

    I have an IMAC 27 with a mini display port ( only this). I also have all the adapters ( mini display port to VGA, HDMI...).
    Since I moved to UAE I like to transmit the signal frm my IMAC ( where I also look German TV on) to my TV. I will do so by using a wireless Transmit receive system with theree cinch inputs ( transmit system ( video, 2x voice).
    The distance to the TV IS ABOUT 10m and one wall. I don`t want to use a cable.
    Is there any solution for example mini display to VGA + VGA adapter to cinch so I can use the transmit system?
    HDMI would also be an optiekn, bat then I have to by another Transmit receive system.
    If somebody made already the experience I would appreciate to share the information
    Is there may be any store in UAE where to get support. It is very diificult to get good advice here. They sell everything bat can not reaaly explain and have very often  no technical knowledge. With this problem nobody until now can help me.
    Hans
    <Email Edited by Host>

    I don't know what AppleTV can handle as far as bit rate is concerned, but increase the bit rate as high as it will let you. You are taking DV which is 25Mb/s and compressing it. If you're making an H.264, you should get great results needing no more than 6Mb/s. Bear in mind, the higher the bit rate, the larger the file size.

  • TS3775 Hi I am trying to connect my mba mid 2011 with an imac 27" 2011 with target display mode tdm. When I am using a thunderbolt cable nothing will work. When I use a minidisplay cable, both screens turn blue but eventually nothing happens. What is the

    Hi I am trying to connect my mba mid 2011 with an imac 27" 2011 with target display mode tdm. When I am using a thunderbolt cable nothing will work. When I use a minidisplay cable, both screens turn blue but eventually nothing happens. What is the problem

    Your answer is likely in Target Display Mode: Frequently Asked Questions (FAQ) - Apple Support If you are familiar with this document, please re-read it and I suspect you may find something you either missed or are doing incorrectly.

  • IMac to TV (HDMI) : Ghost display when TV is off

    Hi, 
    I'm using my Sony TV (40BX420) as my secondary display for my iMac 27", connected via
    MiniDisplay Adapter+HDMI Cable.   When connected everything works fine, the
    audio & picture appears normally.  I use this setup to watch movies on my bigger screen.
    I always keep the hdmi cables physically connected between the TV & iMac (which is always on).
    The problem is when I switch the input on the TV from HMDI to Antenna (to see the TV channels), the
    hdmi appears active to my iMac, and the audio & windows which was getting displayed on the TV, does
    not reappear on my iMac. 
    The only solution to my problem is to physically disconnected the hdmi cable when I do
    not want to watch the computer content on the TV.  
    I'd an older Toshiba TV, when I connect the same hdmi cable to this tv.  As soon as I change the input
    on the TV to HDMI, the iMac responds, with activating dual monitor, when the change the input, or switch
    the TV off (standby) the imac goes back to single display mode. 
    I call sony, their tech support is horrible, they told me it a feature of their TV, it keep the HDMI active in standby mode.
    I tested this buy shutting down the power on the TV, but the iMac was still behaving as if connected and I've a ghost display
    on the TV.
    Please let me how can I solve this issue.   They may quite a few of you who is connecting their iMac to TV
    Sajid

    hi there,
    have you solve this problem?
    Because I have had this issue also, still looking for the solution.
    Thanks

  • Mac Mini behaves poorly through DVI at 1920x1080 on HDTV displays

    I recently purchased a Samsung LN-S4695D - a 46" LCD TV capable of 1080p with HDMI and VGA inputs. I've had been using my 23" Cinema Display + a Mac Mini G4 + Rotel Amp as the centerpieces of my Home Theater, and decided to change out the display to accommodate a gaming system and perhaps some other digital or component inputs (and, of course, nab a larger viewing surface). It seems like a fairly standard use of the Mini, but unfortunately many of us are running into disappointing results using our Minis as connected to an HDTV display. I'm writing here to see if we can clear up the issue with the mini and to attempt to identify reasonable workarounds or solutions until Apple gets the Mini right for HD home theater.
    The current problem with the Mini and the Samsung TV/Display is that when the Mini is connected via DVI-HDMI (with a Monster 400 2m cable) to the display and asked to run at 1920x1080 (60hz NTSC) it does a reasonable job until it is required to refresh a lot of pixels (scrolling through album art in iTunes, playing DVD or other video, etc.). At that point, the screen fills with bands of static, and (if the rate of change is sustained) eventually looses the signal all together. With heavy scrolling operations, the signal returns as soon as scrolling stops, but with full-screen video it usually stays out until the mac resets its video resolution. Another article shows examples of this "DVI static" here:
    http://www.freewebs.com/themagius/minidvipics.htm
    So it is clear that the Mini and HDTVs don't play well at 1080 resolutions, as many of you have attested to. The samsung seems to do a better job than most with the Mini in that it it actually renders the 1080 as well as other resolutions, but flakes out on fast updates. While some other resolutions are also problematic, it is important to note that 1280x720 runs flawlessly on the Samsung, and is currently how I have mine set up (VGA input was too disappointing compared to DVI, though it scanned great and fit the image w/o over/underscanning.). Also, my Powerbook G4 1.25ghz (older than the mini) powers the Samsung perfectly at 1920x1080 as a secondary display, running DVD video or anything else that I throw at it, which leads me to believe that the mini is the problem. Here is another story very similar to mine that reports almost the same results with a Sharp LCD panel:
    http://www.avsforum.com/avs-vb/showthread.php?p=5940932
    So I've three sets of questions for Apple and the rest of you on this forum:
    1) Why does the Mac Mini underpeform with the LCD display? The Powerbook works great, and the mini works great with my Cinema display (also 1920x1080) - where is the disconnect between the Mini and the Samsung? I understand very little about the actual details of DVI signals being carried across the wire, and don't understand what would cause the Powerbook to succeed, but the Mini to falter.
    2) Assuming the Mini video hardware is at fault, has Apple improved this with the new Core 2 Duo line? Has anyone had success where previous Minis or other Apple hardware failed at 1080? If not, is there any announced intention to make the hardware that is positioned as being most ideal for the living room (ie, Mac Mini) actually DVI/HDMI-compatible with the finest HD living room devices?
    3) An unfortunate sideffect of the DVI connection to the TV is that it requires the image from the Apple device to be oversanned (about a menu-bar's worth of pixels disappear on each edge) or underscanned (2" of black space around the image). Is there a common industry standard to correct this? Who is managing the overscan - the TV or the Mini? Also, can any utility, such as ScreenResX correct this until Apple manages to build in correction options into the OS for their living-room devices?
    Thanks for all the help! Hopefully we can outline clear answers here in this thread for everyone else having similar problems.
    Mac Mini G4 Mac OS X (10.4.8) Samsung LN-S4695D, Monster 400 DVI-HDMI 2m cable

    David,
    Great post. There's a lot to digest here. Let's get started!
    The first question relating to noise, or static, over a TMDS (DVI) connection has to do with with the interoperability of various TMDS transmitters and receivers and how they are implemented. At this point in the market place there are thousands of combinations of transmitter/reciever pairings and obviously some are working better than others.
    If you were to observe a TMDS signal with a scope there is something called the "eye" which is framed by the swing voltage and the bit time. When the eye collapses and is encroached upon, digital noise is the result. The noise margin is degraded by higher bit rates. That is why the mini and your TV are working at 720p but failing at 1080p...because the dot clock is that much higher for 1080p. The solution for cases such as this is to build a custom 1920x1080 timing that has reduced blanking, which allows for the lowering of the dot clock. Generally you can lower the dot clock sufficiently to get the noise to stop. LCD displays are relatively immune to reductions in blanking time so you can squeeze a lot out of a timing that was designed more with a CRT in mind.
    To answer your second question, you can't fairly say the problem is with the mini. When you consider TMDS compatibility between two devices you have to take a whole system view. This includes not only the transmitter (mini) but the transmission line (PCB traces from the TMDS transmitter inside the mini to the mini's DVI connector -> the cable -> PCB traces from the DVI connector on the TV to the TMDS receiver in the TV), and the receiver. All three have to work together to make things come out right. You could probably just as easily find a display that works well with the mini that doesn't work with your PowerBook. It can be really had to pin the blame down to one device except in the most obvious cases where a certain device seems to be incompatible with just about everything. But I don't think the mini can be labeled that way. Compatibility is definitely an issue the industry still struggles with, especially at the higher clock rates approaching the 165MHz TMDS speed limit.
    As for question 3, overscan is being forced by the TV, not by the mini. And, no, utilities like SwitchRes X and DisplayConfigX cannot be counted on to reliably deal with this except in the case of pure analog displays with magnetic deflection systems (e.g. old TVs and monitors). Once you have a digital processor involved and a matrix addressed display, tweaks to porch timings and blanking and such do not have predictable results. It seems to work in some cases but it is basically voodoo when it does. Purely luck.
    If you want, I can help you to build a reduced blanking, 1080p timing that will most likely eliminate the DVI static. But you'll still be stuck with overscan. I should point out that a lot of manufacturers are starting to "get it" with respect to the public's desire to attach computers to their hi-def LCD televisions. I see a real shift in 2006 models. I believe the current crop of FHD (Full HD; native 1080) LCDs from the three "S" companies (Samsung, Sharp and Sony) all can display 1080p bit-for-bit now, meaning no overscan. So at least that is changing for the better. Write back if you want help with the timing.
    Cheers. And thanks for starting this great thread.

  • How can i use my old iMac as a extended desktop display for my new iMac?

    I recently purchased a 21.5 in iMac and wanted to use my old iMac as a extended desktop. My new iMac has thunderbolt and USB 3.0 connections while my old iMac has firewire (400 and 800), USB 2.0 and mini-DVI. Is this posible?

    Welcome to Apple Support Communities
    If your iMac has got Mini-DVI, you have a 17, 20 or 24-inch iMac that doesn't support Target Display. Late 2009 and Mid 2010 27-inch iMacs, and iMacs with Thunderbolt can be used as external displays. Read > http://support.apple.com/kb/PH11302?viewlocale=en_US&locale=en_US
    If your old iMac doesn't support Target Display mode, you can use ScreenRecycler to use your old iMac as an extended display for the new iMac. The only thing you need is that both Macs are connected to the same network

  • How to use the iMac last generation as a display for a PC

    Hello,
    Can someone confirm if it's possible to use an iMac last generation as a display for a PC (Windows)  and if, yes, which type of cable or accessory is required?
    Thanks
    Stephanie

    Sorry, but you probably can't. The current and previous generation of iMac can only be used as displays with other Thunderbolt-equipped systems.
    http://support.apple.com/kb/HT3924
    Only if your PC has a Thunderbolt port that supports video out would this be possible, and such systems are currently rather rare.
    Regards.

  • IMac G5 see always external display connected

    Hey,
    I watch movies on my TV with my iMac G5 (i use the mini-VGA adapter).
    When i don't use the adapter, the iMac just see the internal display (called iMac), but now it always see an external VGA display.
    I tried resetting PRAM, NVRAM, SMU, but no change.
    I have installed Mac OS on an external hard-drive to see if it was a config problem, but it's always the same.
    That's a problem cause it uses the half memory of my graphic card.
    Perhaps the graphic card has a problem ?
    I don't know what to do.
    Thanks for your help.

    Make sure that the PRAM battery is under 4 years old.
    Then zap the PRAM.

  • My mid-2010 10.8.2 iMac won't detect external displays.

    My mid-2010 10.8.2 iMac won't detect external displays. I've tried using a third-party minidisplay port to DVI adapter, as well as an Apple-brand minidisplay port to VGA adapter. The monitor I'm using is a Dell SP2008WFPt. It is a functional monitor. I've tried resetting the PRAM, repairing my disk permissions, rebooting, and doing all sorts of wacky stuff with the order I plug things in. Is there a solution? It seems like lots of folks are having the same problem.
    Thanks! This is really starting to make me angry.

    If 10.7.0 or later...
    Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.
    If that doesn't help Reinstall the OS.

  • IMac doesn't recognize Thunderbolt Display (after working as expected for months)

    I've been using this iMac / Thunderbold display combo for the better part of four months and everything has worked fine until today.
    After shutting the machine down and leaving the house for the day, I came home and hit the power button.
    Things sounded normal, but while the iMac lit up, the thunderbolt display remained dark.
    I've tried rebooting, resetting PRAM, SMC and I'm stumped.
    Here's what I know:
    Plugging the display's thunderbolt cable into the iMac (and also my laptop) does nothing.
    Plugging a male to male thunderbolt cable between iMac and the Thunderbolt display also does nothing.
    There is power through the displays charging cable.
    Both thunderbolt ports on the iMac will recognize other thunderbolt peripherals.
    The system report / profile shows no connection at either thunderbolt port when display is connected.
    Anyone have any other advice or troubleshooting ideas?

    While I did an SMC reset on the iMac, the thunderbolt display's power has been plugged in through all of my testing. So, I thought to myself, maybe just do the steps of an SMC reset on the display and see if it does anything. I did the same steps in tandem on both the iMac and the display. Now it works. Go figure.

  • Imac 5k daisy chain thunderbolt display?

    Hello everyone.  Quick question on iMac 5k.  Can I daisy chain 2 thunderbolt displays to an iMac 5k?  I currently have one thunderbolt display connect to it, want to see if i can add another thunderbolt display.  Thank you for the help.

    I believe you may do that provided the iMac is at the end of the chain, so the external drive must be able to pass through the port. But Apple's information on chaining is in relation to their standalone displays which must terminate the chain. So I am assuming that may also apply in your case even though the iMac isn't a standalone display.
    It may be much simpler to use an USB external drive.

  • Hello to all: My iMac has developed a video display problem. It displays everything in cartoon like colors - purple, green, blue. Can this be repaired? Is there a way to output to a different monitor? Thanks in advance!  isplays

    Hello -
    My iMac has developed a video display problem. Everything now appears in a strange, cartoonish way. Purples, greens, blues. Can this be fixed, and if so, any idea how much it might cost? Also, could I output to a seperate monitor? I plan to replace the unit , but cannot right now. Thanks!

    Go to System Preferences > Universal Access > Seeing.
    In the Display area, reset it to "Black on white" by clicking that checkbox.
    You can also reset it by pressing Command-Option-Control-8

  • Can a 24" iMac run my 23" HD Display?

    Hi,
    I have an MacBook Pro and an external 23" HD display that I connect it to at home. I am thinking of getting a 24" iMac, since my MacBook has a hard time running all my photos.
    Is it possible to run the display with the iMac so I have two displays? If yes, which options should I opt for when putting together my iMac?
    Thanks!
    Mc
    Macbook Pro   Mac OS X (10.4.8)  

    Yes, the iMac can drive a display up to 1920x1200 and will work perfectly with the 23" display in either mirrored or extended desktop modes.
    glor

  • Can I use my iMac (20" G5) as a display for the MacBook Pro 13"?

    Can I connect an iMac(20" G5) as a display for the MacBook Pro 13"? If yes, what adapters I need? Does it need modification or software for the iMac?

    You need to use ScreenRecycler or a VNC client.
    (49933)

Maybe you are looking for