PowerPC :: G4 CRT Yellow Screen?
Nov 30, 2007
New here to MacRumors. As the title states, I have a G4 eMac(all white sort of cone shaped) that has a screen that is progressively getting worse. User says it has been gradually getting worse since the Summer. Has a very heavy yellow overtone on any window in the foreground, and some blue etching in the background. I did a search and found plenty of info re: the LCD iMac, but found nothing about this in the eMac? I ran the colorSync utility, and no dice.
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Sep 22, 2009
Pulled my coveted 12" 1.5 ghz powerbook out of its bag and it's has an annoying little opaque stripe about 3/4" along the right side of the display. It changes color from yellow to green. When I pinch the lower side of my display together, it goes back to the blue background color, but still has a distortion to it.
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Jul 4, 2009
Alu 24" 2.4ghz when they first came out with aluminum, got it at the store. since august 07 My imac had a small yellow tint, i noticed, when i got it and it was not worth anyhting screaming about, i also noticed it had bleeding issues ath the bottom and sides. I wanted to return it or trade but i was convinced out of it.
Now i noticed that from left to right their is a prominent yellow tint streaking it's way across and fading around the half way point.It is irritating and sad to see this display on this mac was ok, at first but it is geting slightly worse.I have apple care, can i trade this/replace it at an applestore, or would they need to fix it?
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Aug 28, 2010
I have a late 2006 Macbook, and my dad has an early 2009 Macbook. I was comparing the two today and noticed that there was a significant difference between their LCDs. My dad's Macbook has a lighter, more normal display. While mine has a yellow tint to it and is darker. Both computers were on the same display profiles and both had the same brightness set.
Is this just how LCDs are as they age? Or is mine really not supposed to have that yellow tint? The new Macbook is on the right in the pic.
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Mar 27, 2009
Booted up my Macbook Pro this morning and I noticed this strange yellow-speckled discoloration at the top of my desktop screen. I'll attach a screenshot--its in the center of the screen, right below the top menu bar. What is this? Ran a complete cycle of Onyx, but it's still there.
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Feb 25, 2012
my Macbook Pro's display has been acting up. There's these little yellow squares that keeping popping up on my screen while scrolling through something. They then disappear as soon as I scroll up or down again or open a app, tab, etc.
Info:
MacBook Pro, Mac OS X (10.7.2)
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Jun 28, 2010
I just received my new imac 27, i7 (28-06-2010). I ran the screen test, unfortunately my screen has yellow tint issue. I have ran all updates and firmware within apple update with no luck. Going to call Apple for a replacement!
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Apr 30, 2012
I have this annoying yellow box at the top of my screen. I am guessing my baby girl was typing on the computer and hit some combination because now I have this yellow box on the top of the screen with my name and address in it and I can't move it or make it disappear.
Info:
iMac (20-inch Late 2006), Mac OS X (10.6.8)
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Jun 20, 2012
I just booted up me Mac and got a screen full of yellow squares. I can still see all the icons and everything seems to be working. Is my display going, or is there a fix?
Info:
MacBook Pro
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Jun 15, 2010
It made a loud (very loud) beep, while the screen was grey. The power button flashed in yellow, and then became orange, and then chimed like it usually does, and booted normally.
Now she is using it, it's like if nothing happened.
Specs: iMac DV 400mHz, 640 MB. Mac OS 10.4.11
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Jan 1, 2010
I have not seen any posts comparing these two symptoms together, but I am wonding if both exist on the same screens, or if they are infact seperate issues. I returned a 27" iMac i7 because it had both slight yellowing and terrible backlight bleeding. I have seen multiple machines first hand (3 Core 2 Duos week 41s) at different stores (Apple and Best Buy) that had no yellowing and no backlight bleeding. I won't get into how to check for yellowing, you can read about that issue here: [URL]
But to check for backlight bleeding is both easy and impossible not to see if you have it. To check for backlight bleeding, a quick way is to bring up a site like http://www.blackle.com/ or any other black background, and check for an inconsistent white glow on the edges of your screen. I had serious backlight bleeding in the lower corners of my screen, which happens to be where the yellowing was happening. I don't know if they are related, but hopefully we can determine if there is any correlation here.
I did order a second machine, because I know Apple knows how to make a 27" iMac with a perfect screen (as advertised), since I have seen 3 of them in the wild. Hopefully they will be back to the quality that they had is their early production units very soon.
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Jan 10, 2010
I see all these complaints about i7 iMacs, does the yellow tint affect Core2Duo models? Is the tint an effect of a MB/CPU issue or a display problem?
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Feb 19, 2010
I have a week 50, i7, 2TB Imac. It has a very distinct yellow "tinge", and the Bluetooth does not work properly. Every time I reboot or start, the "Bluetooth setup assistant" starts, which I have to force quit. The wireless keyboard and mouse work fine, but I can't add either of my two bluetooth headsets. They pair, but when I try to activate them, it goes to the bluetooth settings screen, where it says that bluetooth is "off", despite the on checkbox being checked and the keyboard and mouse working. I called support and they had me do a bunch of things, the last thing being reinstalling the OS. Didn't work. So now I need to call them back. I have two problems, the yellow screen and the Bluetooth. Should I ask for a replacement? I see that a lot of people have gotten a replacement just for the yellow screen problem. I have two faults.
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Mar 19, 2010
Just got my 15" i7 AG... and it HAS this yellow tint issue... I just don't know if i should send it back or keep it? What would you do??, and is there a chance to get a MBP with NO problems with the yellow tint?
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Sep 18, 2010
A friend of mine, who's new to apple computers, is using an old powerbook g4 (15" inch) running OS 10.4.9. Everything was normal (except for the screen which is screwed up in the bottom half. But suddenly now as soon as it boots up, it doesn't show the apple logo, but shows a blue screen with a yellow satellite kinda looking graphic, floating around. I can hold the shift button and boot into safe-mode, but I have no clue of what to do, as I don't know what went wrong.
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Sep 12, 2010
Glass over hangs on left and is in a bit on right side on my new 27" i5. So is this normal? Also I think my screen is a little yellow bottom right.
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Sep 25, 2010
i bought the 2009 refurbed 27"er and returned it 3 times due to yellow screen problem. for the 4th replacement they decided to send me the new model.
i have the 3rd and 4th replacements sitting here side by side.the 3rd replacement, which has a yellow corner is light years better than the new one.
the new screen doesn't have yellow corners...it's a perfectly consistent yellowish brown tone.
the older one has a yellow corner, but is much more illuminated and very balanced white. the max brightness of the new one is only 3/4s of the max of the old one.i tried configuring it to no avail.
are all the new models like this?it's quite a bit snappier, but the screen is worse than the last 3 that had yellow patches? it almost seems like it was a return and it shipped from cali rather than asia?
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May 10, 2009
I have had this macbook pro now for about 3-4 months and last week it started showing weird yellow/white stripes on places where it should be completely white. It comes and goes from time to time and it seems to be effected by the hardware itself, since when I move my screen it comes and goes. But when I make a screenshot of an opened window, like iCal, with lots of white space, it does not show the yellow-like stripes. I tried adjusting the contrast at universal access but it didn't work.
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Jun 15, 2012
Has anyone else with a new MacBook Pro with Retina display notice a slight uneven yellow tint to their screen? On my screen it appears starting about midway down the screen and is more noticable on the left hand side. It is very faint, but enough to make me notice it when scrolling through webpages and the such. I am wondering if maybe this is the same glue drying issue with the iPhones that just came off the production line?
Also, when trying to run WebGL content in Safari (haven't tried it in a different browser yet), my MBP completely hard freezes and requires a power cycle to get it running again.
Info:
MacBook Pro with Retina display, Mac OS X (10.7.4)
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Apr 19, 2010
Both the Macbook and HP monitor are set to display Adobe RGB, the HP displays really crisp whites, and the MacBook is yellow in comparison. I'm wondering if all Macbooks display colours this way, or is mine faulty? I tend to work on the larger screen, but it'd be good to have the option to use the small one also.
I've considered buying a calibration tool (an overdue purchase) and/or taking it to the Mac store, it'd be a great help if anyone knows if it's a problem that can be fixed at all.
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Jun 1, 2014
My screen will flash pink with a yellow apple icon just after the spinning gears has stopped when I start up.
Info:
iMac, OS X Mavericks (10.9.3)
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Feb 4, 2008
I am looking at purchasing an Ibook G4 but the description of the item includes this:"When you switch it on it begins to load up i.e. the blue screen with the Apple logo, but then the screen goes black or flickers. Said friend has kindly wiped the hard drive for me so now when you switch it on it makes the �opening� noise then you get a blue screen with alternating �?� and the Finder logo."
I have a feeling this may have been a temporary fault with the screen connector being loose and possibly damaged.But i assume the alternating "?" and the "finder logo" is simply a lack of OS?
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Oct 6, 2008
Our eMac seems to be developing a green tint in the bottom right hand corner of its screen. I've done some quick searching online and it seems that a few people have suggested a cold boot so it runs the degaussing process on a startup.
I left the eMac off for about an hour, unplugged. It did the degauss once it was plugged back in and "seems" to have removed nearly all of the green tint.
There are a few threads on various forums when I search on Google about this issue but they have no conclusive reasons why this is happening.
Could my eMac be developing a fault at all? I'm not too sure if anything magnetic has been placed on our table near the eMac so this may be the reason.
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Dec 26, 2008
just installed 10.5.6 on their last gen. iBook.She left the iBook plugged in to the mains and came back to find that the iBook was alternating between the grey Apple screen and a light blue desktop screen where she could see the cursor. Sometimes it would also switch to a blue screen without a cursor.
I've tried holding shift during startup - no effect.
I've tried rebooting NVRAM - no effect.
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Apr 30, 2007
My iBook will not display anything on its screen. Rather, it just remains black. One time, the screen did come on, but then shortly after booting, it flickered a lot and then went black again. A year ago, something similiar happened and when I took it to be serviced (when I had AppleCare), they had to send it away and have a new logic board installed. Now this machine is out of warrenty and and I am not sure what to do, or even if it is the same problem. Any suggestions?? Thanks!
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Sep 23, 2006
Ever since I sold it here on MR and got it back, there has been a problem with my 12" Dual USB iBook G3 500MHz's screen (lord, that's a long name). Whenever the screen is tilted back farther than 45 degrees or so, the backlight shuts off. I can open the casing and fix it if it's possible. Does anyone know what the problem with it is? I'm trying to get it fixed up and ready to sell back to my friend as his first Mac, and I'm trying to get every problem resolved
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Dec 5, 2007
Thing is I got hold of a 1ghz 17" iMac almost for free, it had a dead logicboard (I checked it with a voltage-meter), but I figured I could fix it and have a small hobby project-thingie going on. Well I just got a new logic board today, for a 1ghz 17" iMac g4.
Things is I only get a bright grey screen from my Mac when I boot. I've tried connecting it to a external display and that works fine. Everything is there.
I then reinstalled Tiger on it, with the computer connected to my external screen. And I still have the same problem. (I have now disconnected the ext. screen and is controlling the iMac from my MBP). So at least it isn't the installation.
So what is the problem? I can via an Apple Keyboard control the brightness on the blank screen, which would indicate that it does react to input of some degree.
I've read that if the inverter is dead or anything else is dead, you would get a rolling grey screen, flicker or something like that and not a steady bright grey. One thing I'm thinking is. What if somehow this logic board was for a 15" 1ghz imac g4? Can I check this?
I read that long thread about guys buying hi-res displays for their MBPs, and they had to replace some display profile? Could I maybe fix it with a different display profile-file?
I'm really confused by all this, and would appreciate any help I can get.
Model: PowerMac6,1
CPU-Type: PowerPC G4 (3.3)
and
the gfx chip is a GeforceMX4 with 32mb.
The display is a mode 9c27, manufacturer 610, serialnumber 00000, manufacture date: B84D7200.
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Aug 11, 2006
i have a mac ibook..and the screen is like halfway on there..and halfway not..the left two inches of the screen is blue...and everything is blurry except the background
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Jul 8, 2008
I have a G4 Powerbook 1.67 that I don't take anywhere. It just sits on an iCurve as a home computer. Never been dropped, damaged, looks as good as new.
That said, the screen sometimes gives me these red moving pixels which distorts the screen image a bit (pic attached). And lately the screen has been going out at times with lines across the screen, then intermittent blackouts.
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Sep 23, 2009
I opened up the following:
System Pref>>Users>>Log In Items>>Highlighted one of the hard drives that I have start up and right clicked>>reveal in finder. This is what it looks like now.
See screen shots for finder view and desktop view.
1. What does this mean? I have done some google'ing using the terms yellow arrow OS X 6 etc. But nothing has come up.
2. Should I be worried?
3. How do I get rid of it?
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