No signal Displayport-->TV?

[stegger]

Hi,
just bought a Macbook Air recently (2010 edition) and at the same time I bought a mini displayport-HDMI adapter and have been using that to display things on both an external screen and movies on my TV- similar to this: http://cgi.ebay.com/Mini-DisplayPor...292?pt=LH_DefaultDomain_0&hash=item27b9d5e8e4

Now the other day, I took out the converter from the mini displayport on my mac while I could see my mac homescreen picture on my TV, and after putting it back it seems it cannot connect any more to either TV or external monitors.
When I insert the above converter the screen on my MBA turns blue for a second, just at it used to once it detected an external screen, but then nothing happens??? I am very new to the mac world, but can I accidently have turned some setting off or any clues on how to determine what is wrong here?
Unfortunately I dont knwo anyone with a mac I could just try my cable with.

Thanks in advance!

 

[Satori]

Try this...

Open up displays (from the system prefs pane) and press the button that says detect displays.

 

[liudekhua]

i am having the same problem too!

i recently bought my mba 13" and also with a minidp to hdmi port from ebay. when i plug in the minidp to my mba, the screen flashes blue but nothing comes up on the tv. when i plug out the minidp the screen flashes blue again. i tried with various tvs and tried the detect screen method. i even tried changing the resolution of my mba. all don't seem to work for me.

any help would be appreciated!

 

[Satori]

i am having the same problem too!

i recently bought my mba 13" and also with a minidp to hdmi port from ebay. when i plug in the minidp to my mba, the screen flashes blue but nothing comes up on the tv. when i plug out the minidp the screen flashes blue again. i tried with various tvs and tried the detect screen method. i even tried changing the resolution of my mba. all don't seem to work for me.

any help would be appreciated!

According to this, only two adapters currently work:

http://support.apple.com/kb/HT4241