Analog to digital conversion for LCD TV

This LCD was manufactured before HD signals were transmitted so It has an analog tuner that is why it isn't programming any channels. Over the air signals became digital 2009 so every TV was required to have a digital tuner to decode the new channels. If you still would like to used this LCD, you will require a digital adapter.
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That could be because the antenna is pointing in the wrong direction, or it's just not getting enough signal where it is in your home.

Have a look at neighbours antennae. See the direction they are pointing. Point yours in the same direction too.

Other causes: you are trying to tune the analog tuner rather than the digital tuner.

Do a channel search and select digital AND analog channels

There is no difference between a "digital" and analog antenna. Either antenna will capture the signal. What you need is a digital converter box to convert the over air digital signal to the older analog type signal your TV needs. You connect the antenna to the digital converter box, and the digital converter box to the TV.
Several years ago, the US government forced peopel to buy digital converter boxes or newer TVs that could pick up the digital signal. Either get a digital converter box or a new TV.

antennas are not analog or digital, just VHF, UHF and they typically connect to a RF coaxial jack on the TVs rear panel. 75ohm silver round jack. Select in your TVs menus, AIR when you want over-the-air TV stations and do a new channel scan to pick up local channels.

There are lots of inputs on the back behind the cover. Three inputs (1, 2, 3) have an S-video, composite video (A/V) and component video jacks. The cover will come off if you press the two top hook at the top of the cover. Then rotate the cover towards you. There are also a DVI-D port and 2 coax (antenna in) jack. The tuners included are for NTSC (analog OTA) and CATV (analog cable). The front of the PC (VGA) and a S-video or composite (A/V) video input (called Input 4).

Composite and component video jacks are all RCA jacks (as are the associated audio jacks for the input). Composite cables uses three RCA plugs on each end - yellow for video, red and white for Right and Left audio. Component video cables have three plugs on each end that just carry video (red, blue and green); the audio is wired separately with just 2 RCA red/white plugs. Match your colors from the device out to the TV input.

Changing inputs can be done with the remote or the input button on the top of the TV. The input button is to the left of the power and Main Power buttons.

Connecting your game system, cable system and all will depend on the units. For the best picture, use component video cables for mose set top box. Some cable boxes have a DVI port - use that if the box has that option. If they do not have component video out, then use composite or S-video cables.

The owner's manual is available from Sharp as a pdf: http://www.sharpusa.com/CustomerSupport/ProductDownloads.aspx?downloadtype=ownersmanual . Use the drop down menus as follows > LCD TV, Model not listed, LC-30HV4U then click Search. The picture of the inputs are on page 10.

I hope this helps.

Cindy Wells

Yes,LCD tv have digital tuner inside.Just buy a digital antena.Plug it in the antena analog whole.Go to menu setup go down to ch.rescan should have all free air channels.

i have the sharp lc-30hv4u but i dont have tha avc box i need buy the box if do you have i can buy call me 702 3280184 thanks

It looks like your TV is not HDTV capable, so you will need a box when the conversion takes place next year unless you have cable box or satellite TV receiver.

First of all, the change is actually goping from analog over-air broadcasting to a digital signal. Second, if you have cable or satelite, you don't need anything. The only time a converter is required is if you use rabbit ears or an external antenna. In your case, the TV DOES have a digital tuner so you DO NOT need a converter in either case.

Dan