Looking for Answers about samsung TX-S2782H?

The TV has worked fine for awhile (aside from some high pitched tones every now and then), but recently it will not display my cable channels. I know the cable is fine because it works on another TV. It seems to recognize that a cable is attached (the fuzzy screen changes to a lighter color when cable is attached), but it cannot convert the signal into cable.

All other inputs (HDMI and Component) work properly, but I need the tv to accept the cable input. But as of right now all it says is No Signal or Weak SIgnal.

I need to purchase a new remote control for my TV

it plays good on my other 61" rear projection tv.

i just bought a new remote for my tv and i need the code to program it and i dont have an owners guide, where else can i get them?

You really have to press the red power button hard to get the TV to turn on.

I have tried to plug my PS3 on HDMI1 and the tv gave a "not supported mode".
I have tried everything but nothing works.
Thanks

help! Sony insists that I have to be able to turn of the internal speakers. I can't find out how to do that using the Setup menu on the TV.

My phone is able to be hooked up to other tv's using its HDMI port, but when I hook it up to my TXS2782HA it flickers for a second and then disappears.
Is there anything I can do to get it working?
Thanks,
Rob