There is no hook up for the hdmi cable on the back of the tv RCA HD52W56 52 in.

On your Android box look for a port marked or labelled 'HDMI' that corresponds to 4 Ports similarly marked on your RCA 55 TV. Use the HDMI Cable supplied with your android box to connect the two appliances. Once connected - use the TV Remote go to 'Source' then flip through the HDMI Options.

Incase the Android box didn't come with an HDMI Cable purchase one from any Cheap TV Shop.

Incase your Android box does not have an HDMI labled port but a banana RCA Video output normally colored Yellow - then you need an RCA to HDMI Converter again from a TV Shop. the connection instructions are as above

If you have a cable box the channels are selected via the cable box remote and the TV is set to an HDMI video input. The specific input is identified where the HDMI cable connects from the box.

Use the video input remote to select the HDMI for the cable box.

Scanning is for identifing the over the air stations that use the coax input noted as antenna (ANT IN) on the back of the set.

Hope this helps?

Personally I would use an RCA cable and hook up the AVR.
((RCA out of TV to AVR audio in))
((cable box HDMI cable output to TV HDMI Input1))
(As far as the AppleTv I would use a separate HDMI Input2)
If your AVR has a dvd or blue ray player Hook up a
HDMI cable out to another Input HDMI3 of the TV
using separate inputs on the tv will allow your surround system to be
used on all modes(CABLE,DVD/BLUERAY,APPLETV)

Sorry but it's time to shop for another tv the cost of repairing would cost almost as much as a new unit.

The tv Samsung refurbish main tv Turner signal board will set u back like $120-130 bucks + shipping and handleling and u must have to have some basic mechanicals skills like take things aparts and putting it back togther again to fixed this tv just for the used of those HDMI hubs ports again.My questions to u is?Does ur tv used 100% must require those useages of those HDMI hubs ports.Not just used the Samsung tv as is.My Samsung tv have the same problems.I just work around it by skipping all the useages of all those HDMI ports hubs of the tv altogther.Most poeple just used about like 3 HDMI ports hubs for like a HD cable box or DVR cable box and a PS3,WII games systems or Blu Ray DVD player.All these devices can go through hook up for like a RCA component cables hook up like AV1,AV2 and last one a HD hookup by a RCA component cable just add 2 more components wires like a green and purple connections or just buy a set of RCA components cable that design for a HD output.I did that,must more reliable set up too.Because those RCA components cables set up have more plastics in it connections for insulation holes for little shorts and sparks better than those HDMI ports hubs and HDMI cables barely help and the plastic for insulation is a joke almost non exiten.Those all dam HDMI ports hubs are all link into one path way on the circuit board,one dies or got shorted all dies and get shorted out.

Cable from box to t.v , from antenna to box . If you have a hdmi cable plug into the back of the box, and plug into the hdmi input on the back or side of your t.v

You can check your dvd player for a coaxial or an optical sound output, then you can plug it directly to your receiver. Those two are the best options after HDMI. Another option is A/V RCA type cable, you´ll need 3 stereo A/V wires, in order to connect the 6 channels. Remember to uncheck the HDMI sound output option on the DVD menu.

I have a similar problem. The Sharp TV aquos appears to be shutting down my blue ray player and dvd recorder when connected via HDMI. They work fine and never close down when I connect them via the rca cables either single video connection or a composite 3 cable rca lead. I have 3 HDMI inputs on the tv and the problem occurs on all 3. Any suggestions?

Hook up Composite / Component Monitor Out wire from receiver to TV video input because receiver will not change analog input into HDMI
You need to connect receiver and TV through analog video terminals as above.
Actually you are expecting that receiver will convert DVD player and Xbox analog video input into digital HDMI signal for TV and This is incorrect.

You have to buy a HDMI cable and hook it up from your RCA system to the HDMI on the back of you TV. Should be all.