HDMI to TV as Display for New Mac Mini DOESN'T WORK

I bought a new Mac Mini and was told I could us HDMI to my TV as display.   I was using this TV as display for older Mac Mini (VGA) and for a Windows PC, and DVD via HDMI.     TV is one year old.
The Genius at the store who sold me the new mini said all I needed was an HDMI cable.   Which I purchased.
The screen comes up for the Setup Assistant but as soon I select continue is goes to gray, mixed color scanning garbage mode.    If I turn the TV off and back on, the screen returns (now at the next prompt in the setup assistant) but again it goes gray after hitting continue.    Unusable, CANNOT set up my new purchase.
Unfortunately, the DVI to VGA adapter on my old mini is different and doesn't mate to the HDMI to DVI adapter that ships with new MacMini, so I can't test VGA.   The old DVI to VGA has extra pins not on the new one.
My purchase is not usable and is extremely poor.   Buyer beware I guess.

I have been using MacMini's for commercial digital signage/video conferencing gateway usage for sometime now, they all have HDMI output, about one third are on Lion the others still on Snow Leopard, here's what I have found.
Toshiba & LG tv's are generally reliable, Samsung and Philips generally are not, Panasonic, Sony, Sharp & Viewsonic all work, somtimes with a bit of work from me.
Cables are important (always look for compatibility with HDMI revision 1.3 or greater (1.4 preferred), don't waste your money on exotic brands, adhere to the distance limitations, I generally send the HDMI signal wirelessly (cost of labor to add wiring to an existing space can be very high) so am limited to less than 50ft, same as with a wire.
READ THE TV MANUAL, find out what HDMI choices your tv possesses, is there a 'parallel' audio input available for the times when your signal origin is a MDP or DVI.
Some TV's just don't work well, cut your losses and get another when faced with this issue.

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http://www.123macmini.com/news/story/782.html
http://www.kaede.sakura.ne.jp/~kidou/mac/macmini01.html
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Hello & welcome Tony!
The Mini natively can handle 2 Monitiors...
Video Support
Works with almost any display or HDTV.
Thunderbolt port with support for up to 2560-by-1600 resolution
HDMI port with support for up to 1920-by-1200 resolution
DVI output using HDMI to DVI Adapter (included)
Support for dual display and video mirroring
http://store.apple.com/us/browse/home/shop_mac/family/mac_mini/select
So I think for 4 TVs you'd need 3 of these...
http://eshop.macsales.com/item/Newer%20Technology/VIDU2DVIA/
Features
Works on PC and Intel Mac models
Lossless compression
LCD, CRT, projector displays
Connect one extra monitor per adapter to your desktop or laptop's USB port!
Configure connected monitors to either clone your primary screen, or extend the desktop allowing visibility of more applications at the same time!
Display Modes:
Can easily Mirror the main display
Extend left, right, above, or below
Can be rotated left, right, or upside-down
Windows Vista & 7 Aero support
Windows XP and Vista 32-bit support
Standard and Widescreen ratio aspects
High-Performance DDR memory
Completely silent operation
Uses very little computer resources and offers a vast array of screen resolutions and color depths ensuring little performance difference between a screen directly connected or via USB 2.0
Supports resolutions up to 2048 x 1152 including SDTV/HDTV resolutions: 480i/p (640x480), 720p (1280x720), 1080i/p (1920x1080)
Bus Powered Operation - no external power supply needed
Macintosh:
Intel based Mac OS X 10.4.11 and above
(not compatible with PowerPC based Macs)
Supports up to four monitors
NOTE: There is a possible incompatibility with the primary screen becomes corrupted or other issues are seen when using the DisplayLink Mac driver on Core i5/i7 systems. This issue has been resolved by Apple in Mac OS X 10.6.5.
NOTE: Software Color Calibration tools do not operate on displays connected via USB Displayport technology.
Windows:
2000 SP4, XP SP2, Vista with Aero support, and 7
Supports up to six monitors
Includes
USB to DVI Adapter
DVI to HDMI Adapter
DVI to VGA Adapter

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Hello,
I'm considering replacing an old Mac Mini with the new model, but I intend to keep on using my old Apple Cinema Display 20" with it. But i'm having some trouble finding the right conversor (it seems there isn't any from Apple...)
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Regards.

HDMI to TV as Display for New Mac Mini DOESN'T WORK

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