No Signal on Mac Mini

Recently i bought a mac mini and its worked fine UNTIL a couple of days ago, i turned my computer on and it comes up with 'No Signal' i turn my computer on and off and still nothing, please help
thank you.

First, double-check that all of your video cables are securely connected, and no obvious faults with the connectors. It may also be wise to test the cables with another device, and the monitor with another device to be sure, if possible.
If there is still no video signal coming from the Mini, then it might be a good idea to contact AppleCare and see whether they can take a look at it and see whether there is a hardware fault present.
Hope this helps!

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No signal message - Mac Mini - Samsung P2370HD - DVI-D cable

I just received my new Mac mini and want to connect it via DVI-D cable to my existing Samsung P2370HD monitor. I have a DVI-D to mini-DisplayPort adapter connected to the Mac Mini and then a long (3-5 ft) DVI-D male to DVI-D male cable connecting the adapter to my monitor. I have checked all connections but the monitor is giving me a "No signal" message. When I unplug the cable from the adapter, the monitor gives me a "Check signal cable" message, so it seems as if the signal is not making it through the adapter to the TV.
Can anyone offer advice? I really don't want to pay for a new monitor.

My brain finally kicked in, and I was able to get the monitor to work by using the mini-DVI to DVI cable included with the Mac Mini and connecting that cable to my DVI-D (male to male) cable. I am now getting a signal to the monitor. Guess I will be returning the Dual Link DVI to Mini Displayport adapter as it was not cheap!

Problem with Mac Mini and Panasonic PT-AE700 projector

I just bought a brand new Mac Mini and intended to connect it through hdmi to my Panasonic PT-AE700 projector (with a 10 m hdmi-hdmi cable and a dvi-hdmi adapter). However there is no signal recognized by the projector.
Any suggestions? I have tried with two different dvi-hdmi adapters between the Mini and the cable. Both work fine with my MacBook Pro, but with the Mini there is no signal.
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Thanks again BSteely for your answer.
Unfortunately I still haven't been able to get anything out from the projector through HDMI.
However, I've found someone with a similar problem. It seems the problem is the lenght of the HDMI cable (which in fact is closer to 15 m than 10 m). HDMI is designed to handle at least those 10-15 m runs, but the problem seems to be DVI, which is only capable of something around 5 m. Since I'm converting from DVI to HDMI, I'm subject to DVI's limitations. And the MBP seems to have better capability of handling the weaked signal than the Mini.
Read more: http://www.avsforum.com/avs-vb/showthread.php?t=712218
Gefen should have an amplifier (HDMI Super Booster) that could solve the problem. I just ordered it to see if it could help in strenghtening the signal and solve the problem for me.
Read more: http://www.gefen.com/kvm/product.jsp?prod_id=2939
If someone has any experience from the booster, please let me know.

Disfonctionnement mac mini et TV Sharp

Bonjour,
J'ai acheté un mac mini que j'ai connecté à ma TV sharp. Au premier branchement, j'ai obtenu l'écran d'accueil du mac mini mais après quelques minutes d'utilisation, plus rien.
Ma TV ne trouve plus le signal du mac mini.
Pourriez-vous m'aider à comprendre ?
Merci

Bonjour,
Est-ce que la télé avez des paramètres de la source d'entrée sur elle?
Est-il compatible HDMI, DVI ou VGA?
Safe Boot de la HD (touche Maj tenue down au démarrage), est-ce que montrera un écran?

My Mac Mini don't work with 3d Televisions.

Hello all,
I have a Mac Mini, and recently i buy a television by Sony 3d (46").
For my surprise, the television dont accept the signal from Mac Mini. O then screen appears the message (Signal Incompatible).
I change all configurations, but nothing. I call to Sony and they dont have idea about the problem.
Cam anyone help me?
Best regards,
Marcelo

Assuming your using a new Mac Mini with a HDMI to HDMI and one of the 4 HDMI ports on the Sony, the Mini will only recognise your screen when you either wake from sleep or on a restart. I've used this on a few Sony 3D TV's without any problems. Have you tried using one of the two HDMI's on the left hand side of the screen (HDMI 2 and 3 on the remote)
However, if you're using an old mac mini with the DVI connector, some of the convertor cables don't work, so it's worth checking that first.

Mac mini gives start-up chimes, fans run, etc, but display says "no signal" was working until this randomly happened?

So, I bought a Mac mini the other day- an "open box" item from Best Buy (Mid 2011, i5 processor, 2GB of RAM running 10.8)
Anyhow, it was working fine all day, i had transfered all my itunes library over to the new Mac mini from my MacBook Pro, and put the programs I wanted onto the mac mini. (Including plug-ins etc.) It was working fine, even with 2GB of RAM.
Anyhow, it started to get kind of sluggish, so, I closed all the programs (I assumed this was because it has 2GB of RAM, and I had been pushing it pretty hard all day), and checkd "About this MAC" Low and behold, it said only one RAM card was in, and it was a 1GB card. Well, that explains the eventual sluggishness. Further though, I think it means that once of the RAM slots is messed up.
Problem A) One of the RAM slots/cards is not working properly.
Problem A.5) I actually have two 2GB sticks of RAM that I pulled out of my 2011 MBP which will work, so, my plan is to upgrade to that RAM once I get the RAM card/slot information squared away.
When I opened up the case to try to switch cards, or address Problem A.5), I noticed that one of the clips for the Mac Mini's RAM was broken. Perhaps this is why one of the RAM cards was not being read?
Problem B) One of the clips that holds the top RAM card in place is broken.
After I had seen this, (I didn't actually do anything to the RAM, since I know Apple doesn't cover anything if you broke it, so I want to be able to say that I actually didn't touch anything- my guess is the people at Best Buy may have broken it?) I reconnected the Mac Mini, and was going to get the email and calendar set up, as that was all that was left to get set up. Oops.
After reconnecting, restarting, everything a few times, the same problem presented itself.
Problem C) even checking all connections, thoroughly, etc, the Mac Mini chimes on, fans start whirring, etc, but the display reads "no signal." Tried reconnecting the display, disconnecting, etc, nothing worked. I knoe the display works because I hooked it up to my MBP and it worked fine.
So, I've got a few issues going on, and an appointment at the Apple Store in Providence, RI today at 7:45 PM.
But, does anyone know anything about any of these issues? So I may be able to try to tackle some of them on my own before going in? Or, what to expect from the Apple store?
Thanks guys- any help is greatly appreciated!
-Andy

Hi,
my guess is the people at Best Buy may have broken it?)
My guess is since it was Open Box, somebody bought it, broke it trying to replace RAM, then returned it as they no longer wanted it.
Safe Boot from the HD, (holding Shift key down at bootup), if that doesn't work, try a Verbose boot, CMD+v
But the new Mini's use RAM as VRAM, so I think it's the RAM/slot issue

Mac Mini DVI to HDMI (blank screen, "no signal")

I have an older Mac Mini with just DVI. I bought a Monster Cable DVI to HDMI adapter (http://www.monstercable.com/productdisplay.asp?pin=4596) trying to hook up to a Samsung 46" LCD TV. All i see is a black screen with "No Signal". What am I doing wrong? This worked when I had a straight DVI to HDMI cable (from MonoPrice).

Just to update this:
Got my DVI to HDMI cable today!
Plugged it in, booted her up and was presented with a perfect 1080p HDMI signal without having to alter any display settings.
Fantastic!
In my display menu I have 10 resolutions to play with with , 3 of which are full 1080p, one is specifically for PAL tv in the UK.
Couldn't be happier!
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David

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I've had this issue since I first purchased my Mac Mini back in August. I also discussed this issue with a friend who just purchased a Mac Mini too, and he has the exact same problem. When connected to my monitor via HDMI, the screen will flicker to green, go out, then come back on. Sometimes I have to cycle my monitor input button before the screen returns. Also, if I connect to my monitor via DVI to Thunderbolt adapter, the screen flickers to "snow", then cuts out intermittently. It's the same problem either way. I'm connected to a new Asus VE276Q 27" monitor. I connect my Xbox and PC to the same display with no issues whatsoever. This is my first Mac product and I'm VERY frustrated with this problem. A firmware update was released a few months back regarding flickering when connected to an Apple Cinema display, but this had no effect on My machine. I've also verified the display refresh rate setting as well. Anyone else out there having this problem?

I recently got the 2.3 GHz Mac Mini. I tried hooking it up to a Viewsonic VX2035 with the enclosed HDMI DVI converter. I get the same results as you. Nothing on the monitor. It says no analog signal detected. Then the monitor goes into sleep mode. I hooked it up to a 32" Westhinghouse HDTV using a HDMI cable and it works fine.

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Just unpacked Mac mini and powered up using Mac mini to VGA display adaptor and VGA monitor. There is no signal to the monitor ( power is on).
How to see the display?

[ 13.093] (==) No Layout section. Using the first Screen section.
[ 13.093] (==) No screen section available. Using defaults.
[ 13.093] (**) |-->Screen "Default Screen Section" (0)
[ 13.093] (**) | |-->Monitor "<default monitor>"
[ 13.093] (==) No monitor specified for screen "Default Screen Section".
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First step would be to create the necessary entries (easier to make a complete xorg.conf versus xorg.conf.d/##-whatever.conf).
All Desktop Environments / Window Managers rely on X. Man pages are helpful, possibly some headaches ahead as I fought a dual-monitor display this way.
I currently run a xrandr script to switch displays on my hp pavilion: https://wiki.archlinux.org/index.php/Xrandr#Scripts
Check it out.

I have a new MAC MINI and I want to install a second monitor. I have one connected to the HDMI and it works. I can't get a signal to the other one. It is connected from the thunderbolt to its HDMI port. How can I make it work?

I have a new MAC MINI and I want to install a second monitor. I have one connected to the HDMI and it works. I can't get a signal to the other one. It is connected from the thunderbolt to its HDMI port. How can I make it work?

Could be a bad cable or bad Thunderbolt port.
You have 90 days of free telephone support on a new device. You can call them at 1-800-MY-APPLE. Have your Mini's serial number handy
You can also make an appointment at the Genius Bar of an Apple store.
Apple Retail Store - Genius Bar

Mac mini "Overtemp" signal and sleep received regularly.

mac mini "Overtemp" signal received regularly.
been researching the regular "Overtemp signal" received by my mini (Mac Mini PPC G4/PowerMac 10,1, 1.42GHz, 1G RAM, Tiger 10.4.11) followed by forced sleep since around the time i updated adobe flash a month ago. it goes to sleep whenever i run streaming video or multiple resource-heavy apps. the fan motor seems to top out, wind down and the mini's power light pulsates slowly/softly. if upon waking the mini a video or heavy process is still running, the cpu often sleeps before i can quit any such process.
i tried reverting to an older version of flash to no avail. i have reset both the PMU and PRAM. i've run Disk Utility from the system disk. iStat Pro reports an average of 130°F/55°C. around a year ago i opened, cleaned and upgraded the RAM in my mini in a clean room. can't imagine it could be worse in there than then when the computer functioned fine.
i found out about Narcoleptic Aluminum Powerbook Syndrome, and found a user that had most carefully removed his PB's temperature sensor. is it possible that i have a faulty sensor? bad fan (even though it sounds like it runs clean)? anything else i could potentially fix using iFixit's manuals?
here are my log files:
http://pastebin.com/raw.php?i=cAixtfAt
http://pastebin.com/raw.php?i=ZKUC3qWv

Is it possible that the air vents have become blocked? One mini owner had a cat that liked to sleep next to the mini, which caused the air vents to get clogged with cat hair.
Do you have any print jobs that haven't completed? OS X can try to reprint, causing CPU to spike. Doesn't sound like the issue here, but worth a check.
Definitely sounds like a flash-related problem. Have you tried ClickToFlash? It can be downloaded here: http://clicktoflash.com/ . I use this on our G4-based systems, including a mini. This may help.

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Here is what I see - If i shut down and then power back up, I get the grey screen, then the apple logo, then the little status circle spins for a few cycles then stops and then the screen goes black and the monitor says signal lost and then 5 seconds later goes to sleep.
It is possible it is my monitor but, I haven't had any issues with it and i only drops the signal like that during a reboot.

Welcome to the family. Search this forum for the main thread for this problem titled: "mac mini 2012 video blinking out".

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There is no limitation to get 16:9 out of VGA. How far away is the TV? What are you using for a cable? Do you get the result you want from a shorter cable?

My Mac Mini was not sending a signal to the monitor. I powered down using the power button and now it will not start. When i power up I get a strange 2 tone sound, like a warning alarm. The fan starts, and the light comes on, but no screen

My Mac Mini was not sending a signal to the monitor. I powered down using the power button and now it will not start. When i power up I get a strange 2 tone sound, like a warning alarm. The fan starts, and the light comes on, but no screen.
I have tried with a wired USB keyboard and mouse using a single screen. Powered up with option pressed. No change.
Reset SMC no change

Run the Apple hardware test to see what it tells you. Run the extended test when prompted, which can take awhile.

"No signal" on screen with new mac mini

Hi
I have just bought my first Mac Computer. When everything ist properly connected and I start the Mini, the monitor shows "no signal". The Mini ist switsched on and starts (light goes on). The Monitor is a 4 year old TFT with Analog port (white adapter neccesary to connect it to the MAc Mini). I tryed with another Monitor (6-year old Phillips) and the Screen still stays black.
Help would be highly appreciated.
Thanks
Flokes

The fact you are getting the same symptoms with two displays suggests the mini or the DVI/VGA adaptor may be at fault.
I would suggest you follow the suggestions in http://docs.info.apple.com/article.html?artnum=300583 and if that doesn't help, since this is a new mini, call Apple without any further delay.
Note that in the above document it refers to resetting the PMU. This is something related to the earlier minis. For your Intel model instead of resetting the PMU, you need to try an 'SMC reset which is done as follows:
-Switch the system off
-Unplug all cables from the computer, including the power cord and any display cables.
-Wait at least 15 seconds.
-Plug the power cord back in, making sure the power button is not being pressed at the time.
-Then reconnect your keyboard and mouse to the computer.
-Press the power button on the back to start up your computer.

No Signal on Mac Mini

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