HANDS OFF THIS UNIT! IT IS USELESS !!!

I have admittedly not buy this device from Amazon, but in a market with M ... M ....
Actually have a friend and I equal to 2 this equipment bought us each one to 999, - Euro.
We then installed his first, and ... what a disappointment!
Together we have 7.5 hours (ie 15 man hours in total) spent an image setting to find at least no worse than the previous Samsung 47 "Full HD is ... FORGIVENESS!
The image is pixelated or noisy either (or both) and / or strip shows namely so bad that I probably would not even accept this with a SD TV!
Speaking of SD: the analog TV is completely useless without a digital image source, the device is not at all to use (but sometimes I'm just lazy and turn on my TV just an analog only, look for news or so).
Not with this device!
Whether the image of the cable set-top box comes from a Blue Ray or PS3 ... all equally bad.
On top we had then also find out that while one of 4 HDMI ports provides a picture but no sound! The connection is obviously defective standard. A picture, no sound ... a Hornyphon?
Conclusion:
1. unit back not even unpacked their original packaging, 2nd unit, and both will be returned by return mail on Monday.
Meanwhile, the only thing I understand why the market offers with the M ........ the device at this price.
What's just surprises me that Samsung permits, with such low quality damaging its brand permanently !?
And Samsung has (te) in TV's once the call to process the best panels and to provide the best flat screen TV's ... but that's obviously past!