22" Vizo 720p TV Display not connecting with 15" Macbook Pro

I'm trying to connect my Mid-2010 15" MBP running Mountain Lion to a 22" 720p TV. I have hooked my MBP with the same adapter to other monitors with success so I know the port and the adapter work fine. I have tried detecting displays, unpugging and replugging, starting the devices in different order, and so on. The only success that I have had is when I restart my MBP and close it so it is in clamshell mode. The Apple logo appears on my external monitor and then just shows a few, vertical pink bars across the screen. I have tried adjusting the TV settings with no luck. It says that the VGA settings for the TV are 1680x1050.
Could this resolution be the issue? Could it be possible that this monitor is not supported by Macbooks?
Any advice would be greatly appreciated!
Thanks!

OK - I bought the Apple Mini Display Port to DVI plug and a DVI to HDMI adaptor. I then tried this set up on another TV in the house, a Samsung 720P TV, and after sizing the TV settings correctly, the process worked - as advertised (MBP recognized Samsung 720P).
So I trotted downstairs and tried the same process with the Panny TV. I must be snake bit. The MBP video on the TV came on when I connected the cable. The video turned off after I closed the MBP lid. When I woke it up with mouse/keyboard, the video came back on.....for about 3 seconds, and then shut off. Then it keeps coming back on every 15 - 20 seconds but shuts right back off.
I'm hanging it up for tonite before I throw the mess across the room and will tackle it again tomorrow.
Anything you want to add? I certainly appreciate the help!

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