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Mini display port to HDMI problem

I have my aluminum Macbook perfectly wired up to my 32 inch RCA HDTV. Nothing will come up on the screen, I've tried detect display, I've tried restarting the computer, unplugging and plugging back in then detect display, turned the tv of and on, but nothing is working. I am currently running Snow Leopard, but when I was on Leopard this process of attaching the TV to the computer just took about 10 minutes of doing desultory processes that I've already described. Any suggestions on how to make it work the first time?

Early 2009 Aluminum Macbook, Mac OS X (10.6.1)

Posted on Sep 28, 2009 1:36 PM

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1,012 replies

Nov 21, 2013 4:19 PM in response to Ponponhead

When unsuccessfully trying to connect a late 2009 Mac mini to an HDMI monitor here is what I have learned to solve my problem. I had purchased a Belkin mini display port to HDMI adaptor and connected to the monitor with an older HDMI cable. No luck - blackscreen, no signal. Read the blogs and quickly determined that not all HDMI cables are the same. Back to the Apple store to exchange the Belkin adaptor for a Belkin HDMI to mini display port connectors and voila! Success.

Nov 26, 2013 6:42 PM in response to cole152

ohh I wish I would have seen this message before. Did you know you can just download airparrot and you can mirror your display on your tv without an adapter? I found out earlier today and cant believe apple did not do it and makes us go to 3rd party to pay for software that should have been on our Apple computers to begin with. I have early 2010 macbook with OS Maverick on it but no airplay so I was using an adapter but just randomly found out there is a fix it is called airparrot and it costs 10 dollars.


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Nov 28, 2013 10:27 AM in response to Ponponhead

I too am getting extremely hacked off now. It HAS to be a software problem as I can't connect to either my projector or either of my televisions, though they both worked fine before. The HDMI hasn't worked with one TV for a little while, but worked with my smaller one. Then that stopped working the other night so I connected by VGA, which was working perfectly. Then, when I came back a few hours later it had decided to stop. Connected my brother's PC and it connected straight away. I need to dual screen to get my uni work done and this needs to be sorted because it's driving me mad! Apple, why haven't you sorted this yet!?!!

Dec 14, 2013 5:15 PM in response to Steve Gallagher

Over the past year, I've had 11 go bad. Apple, Monoprice, Blue Rigger, Moshi, Gigaware - each brand randomly fried after weeks of working. The two I posted about above did so within hours of eachother. I've used them with three different brands of monitors and two different brands of TVs. So what, pray tell, could be doing it if not the MacBook?

Dec 14, 2013 5:20 PM in response to wcs0816

wcs0816 wrote:


Over the past year, I've had 11 go bad. Apple, Monoprice, Blue Rigger, Moshi, Gigaware - each brand randomly fried after weeks of working. The two I posted about above did so within hours of eachother. I've used them with three different brands of monitors and two different brands of TVs. So what, pray tell, could be doing it if not the MacBook?

The software within the MacBook that controls the port?


No longer working doesn't mean that the MacBook physically destroyed the cable.


The MacBook can't supply enouh power to destroy 1, let alone 11 different cables.

Dec 15, 2013 12:59 AM in response to wcs0816

Hi Guys,


I post back here periodically because endless number of people continue to have this problem which apple has no intention of fixing. Last year I had these issues for around six months. I tried every possible solution proposed here, including switiching the monitor off then on whilest waking the mac up from sleep, pram nvram resets, etc etc the list goes on, but many of the methods didnt work, and some only worked temporarily. As a last try I bought a mini displayport to hdmi cable from NEET. To my surprise it worked. I actually tried to sabotage it because I didn't believe it would be a permanent fix, but all my attempts failed. Its now been over a year that im happily connecting to different monitors, tv's, and projectors, with no connection issues.


I know how frustrating this experience is because I was in it for over 6 months, but the mdp to hdmi NEET cable has worked for me so I suggest all of you try it too.


Good luck!

Dec 15, 2013 1:16 AM in response to grufnmuf

My suspicion is that its an electrical problem which messes up the adapters. I was using a moshi for about 6 months with no problems. Then one day I forgot to take it to a mates place and he offered the use of his adapter which was some cheap $h1t. That was the beggining of my woes, it worked that evening but when i got back home and used my moshi it immediately stopped working. I bought two other recommended adapters and both worked for a short while then broke.


But now over a year of constant use with the cable and no issues.

Dec 16, 2013 5:11 AM in response to Ponponhead

Well, everyone. I can now say this MacBook has burned through 12 different mini DisplayPort to HDMI or DVI adapters in the past year. I arrived at work this morning, plugged in the one I keep connected to my external monitor, and now it's dead. This is absolutely incredible. I have a feeling this will likely be my last Apple laptop purchase.

Dec 27, 2013 5:43 PM in response to Ponponhead

Hi All;

I have a MacBook Air 11" connecting to an HP 2210m (22") computer monitor on its HDMI port using HDMI cable and rocketfish thunderbot/mini displayport to hdmi adapter. On first connection (2 months ago) it worked and I was also able to connect to a 37" LG TV in a similar manner

Lately, it became intermittant and then failed to display at all.

I replaced the rocketfish adapter at the store today. Tried a new one and it did NOT display either. I also tried a different HDMI cable... no Joy.

Finally I thought it might be a power issue since I saw the MacBook Air screen pulse in an out while it tried to send video to the external screen/device. So I plugged in the charger and unplugged my logitech mouse/usb plug. Then when I tried again it flashed a few more time and came up ok. Later I put the mouse usb plug back in.

Once the rocketfish gets warmed up it seems to use less power. At the beginning I think there is barely enough power to drive the adapter over the USB port so I recommend you have no extra devices attached, perhaps dim display a bit and plug battery charger in. Worked for me!

Mini display port to HDMI problem

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