Mini DVI to Hdmi Adaptor display problem

Hi I just got a new miniDvi to Hdmi adaptor and an HDMI cord so i can dual monitor for video production and what not. Problem is when i hook it up to BOTH my 720p HDTVs the mac screen goes blue for a few seconds as if its going to connect to the display, but then goes back to normal, the TV says no signal, and in the display settings it wont detect the other monitor. I have the 2008 model of the 20" imac with mac os 10.5.8. Does the minidvi to hdmi adaptor nit work right? do i have to go Minidvi to DVI adaptor to a DVI HDMI cord?
Thanks for any help
-Dan

Really i did not know that, the 2 TVs i tried were an Insignia and a Samsung. I dont think its a bad adapter because it understands that theres a possible signal going out. OH the thing about the tvs not accepting computers through hdmi is not true because i have a PC laptop with an hdmi port and i was able to hook it up to the samsung just fine. any other suggestions?

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  • Mini DVI to HDMI problems...

    Hey guys, I hope you can solve my problem. My late 2008 MacBook...
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    I am having an identical problem. Unfortunately, I cannot quite follow the syntax of the response to the original post. I have a Macbook 2.1 and I am trying to hook up to an LG 32LH20 TV. I got the Mini DVI to HDMI adapter and an HDMI cable at eh Apple store. Connected the HDMI cable to the HDMI IN jack on the back of the TV. They also sold me an audio cable with the 3.5mm jack on one end and the red/white AV plugs on the other end.
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    Message was edited by: ratrodrick

  • Mini dvi to hdmi, tv not displaying imac screen it remains black

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