Hi Susan,
I get full resolution (1080p) on the 24" TEAC TV no matter what cable/adaptor configuration i use, but when i use a mini display port to hdmi cable (or mini displayport to hdmi adaptor to hdmi cable) the image quality is unbearably bad. Nothing is smooth and text is jagged and almost impossible to read.
Yes, you are correct when i use Mac > minidisplayport > DVI > HDMI > TV the picture is perfect! All i meant when i said i have almost given up is that i couldnt find an answer as to why my television would not display a decent picture quality when going through only Mac > minidisplayport > HDMI > TV. I wanted the ability to send sound to my TV though HDMI but as DVI does not support sound the use of a DVI to HDMI adaptor made this impossible. Hope this information is helpful 🙂
Andrew Wolczyk you are very wrong to say that you cannot get clarity on a TV. The model the OP is using is only a 22" television.. its smaller than the screen i sit 30cm from every day. Even when i plug my macbook into a 50" Plasma i still get a perfect clear and smooth picture through mini-displayport > HDMI. Only my TEAC 24" LCD TV seems to have the problem i stated with this cable/adaptor config.