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Re: HD tv changes
The changes that you mention will only effect you if you use either rabbit ears or a rooftop antenna. The over-air broadcast signals are being changed from analog to digital. If you have cable or satelite service, there will be no change.
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any tv 30 yrs old is surely analog , these wont work in todays environment as the ole government did away with all those analog goodies , you'll need a converter to convert the new 1080P HD pictures down to the fuzzy analog signal so your tv can see them , unless its a family heirloom with a fantastic looking wooden cabinet id be looking to get a new HD tv to replace it
Based on the specs for the TV, the DS31520 is not an HD-ready display. It is at best an SD display with an NTSC (analog tuner). (Picture resolution: 330 lines, video input 660 lines) OTA ATSC signals are 480i (SD), 720p or 1080i (HD) where those are the number of horizontal lines of pixels. The manual is available here: http://www.sanyotv.com/DS31520%20%28ESF%29%203178--.pdf .
This is a fine TV for analog cable or OTA TV with a standard digital to analog converter box (which only give SD output). The TV has composite video and S-video inputs (again limited to SD).
For HD, you will need a new TV screen that can display more rows of data.
no you will need a box and a hd antena
your tv if it is hd ready will then recive hd quality tv.
the only time you dont need a box is with cable or sat thay provide the convershions.
and hope this is of help to you.
IYou have to have your comcast box tuned to a channel that is broadcast in HD. On your Comcast remote hit menu. This will bring up several icons, one is HD. Select that icon and it will bring up the TV Guide for just HD channels. Select one and tune to that channel. Once your on that channel use your original remote and hit menu, then advance features, then go down to video display and change it from 480 to 980 or 1080. Let me know if this helps.
If it is an older model (i couldn't find anything on it either), it most likely does NOT have a QAM tuner. Be aware that only the "un-encrypted" cable channels will be free otherwise you will have to buy or rent the digital box from the company to get the rest of the regular digital channels. The un-encrypted channels are like 71.2, 83.7 so you should know if you are getting those or not.
If the LCD only has coax, it will never display a HD picture quality. However, the Comcast HD Box will still display a picture using the coax connection. So, you could watch any HD channel, but the picture quality will not be high definition.
The Sony "S" series is not HD compatible in any way. To see an HD program you would require an HD down-conversion box. This would make the pictures look like regular TV, but may have some distortions because of the 16:9 scan ratio from the HD programs, unless you model series is 16:9 compatible.