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No signal on DTV channels 9 and 7 - Projection Televisions

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  • Anonymous Apr 28, 2009

    Can't get a signal on any channel, worked all last week, this week nothing what the hell

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Try to rechannel it again

Posted on Dec 10, 2008

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How do i get 1080i, my tv shows im only in 480i. i think i might have it hooked up incorrect. my other tv of another brand is much newer so all i did was connect the hdmi cable from the tv to the cable box...


Hello

Your TV will display all High Definition signals as 1080i True HDTV™ and all standard definition signals will be displayed as 480p.

Component Inputs 1-2
YPbPr(480i/480p/1080i)
These inputs can be used for the connection of A/V equipment with component video outputs, such as a DVD player or external HDTV receiver. Please see Appendix B for signal compatibility.
Input DTV (480i/480p/1080i)
This input is used to connect an external DTV receiver, and can be configured for YPrPb and RGB plus H&V signal types.

As a special feature, you have the ability to adjust the red and blue light beams in reference to the fixed green light beam. This process is called convergence. There are two separate memories for convergence. One, for SD 480i/480p signals; the other for HD 1080i signals. SD convergence should be adjusted while watching an SD source and HD convergence should be adjusted while watching an HD source.

Wide Expand: Enlarges the picture, cropping some of the image on both sides. This Expand format is useful to remove or reduce black side bars on HD broadcasts of 4:3 images with black bars. Available for analog 1080i, digital SD 16:9 and digital HD signals.

InputDTV
This input is compatible with most standard DTV and satellite receivers with component video (YPbPr) outputs. Compatible DTV signals are SDTV 480i/480p, and HDTV 1080i. All other DTV signals, such as 720p, need to be converted by the DTV receiver to one of the compatible signal types. Please check the DTV receiver specifications before connecting.
This input is compatible with some DTV receivers using RGB with "separate H and V sync". Compatible DTV signals are SDTV 480i, 480p, and HDTV 1080i. All other DTV signals, such as 720p, need to be converted by the DTV receiver to one of the compatible signal types. Industry standards for DTV RGB signals (systems, synchronization, timing, and signal strengths) are not currently established. These inputs will not be compatible with all DTV receivers that offer RGB, HV outputs. RGB, HV signals with less than 5 cables are not compatible.
If your DTV receiver offers both DTV component video signals and DTV RGB, HV signals, we suggest you use the DTV component video signals. Check the DTV receiver specifications before connecting.
Ok.

Feb 05, 2011 | Mitsubishi WS-73909 73" Rear Projection...

1 Answer

Trying to hook up converter box to Westinghouse flat screen the converter is magnavox sdtv. I get autoscan but no channels are found. I do not have an antennae. Do I need one? Help!


If ur tv a LCD tv it is a digital tv.U do not require a Digital converter box to get the new DTV free air signal broadcasting tv channels stations.But u do require a good digital antenna for it to recieve a long an strong signals to recieve a DTV free air broadcasting tv channels stations.

Dec 07, 2010 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

Toshiba 46HM95 wont display 720p from dtv antenna other tv works


lets start with the easiest first.does your tv in the menu option offer an input output source like 720p or 480p?on my set i can change to any format.maybe yours does too.let me know and we go from there.

Mar 04, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

DOES THIS TV NEED A CONVERTER BOX?


If you scan your channels you will find out if it is digital. Say for instance you get channels 2-1, 16-3, 12-2, 12-3, then your TV is digital. Now if all your channels have no dashes and your channels come up 2, 12, 9, 16, and so on then you have an analog TV. Since this is a walmart brand there is not any online support that I can see. If you bought this a few years ago then again your tv is more than likely analog.

Apr 24, 2009 | Projection Televisions

1 Answer

DTV


Yes, you will need a HDTV converter box. Your set does not have a ATSC tuner that recieves HDTV signal. Your HD signal will be thru your Component Inputs on the rear jack panel along with audio IN.

Mar 04, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

I installed an Insignia converter box, Model # NS DXA1, and it worked fine. I did not realize it would decrease the size of my screen, so I disconnected it and figured I would try again later. I have...


Ok, you have 2 issues:
1) Consult the manual page 8 for setting the 'type' of TV either 4:3 (Standard) Aspect Ratio or 16:9 (Widescreen) Aspect Ratio. Then the Picture Size for 'each individual station' can be Selected via the button on your remote in the upper right hand corner. It's labeled "ZOOM". As you push the button, it will rotate through the size types available. If you have an older standard TV (4:3) and want to fill the entire screen, then select 'CROPPED' for every channel(my preference). You will only see a center cut of the entire picture and will lose some picture on either side, but most of the action will remain in the center of the screen. If you select "SET BY PROGRAM" then some programs will appear in their actual Aspect Ratio so some will be in 16:9 and some in 4:3. More and more programming will end up being 16:9(the new DTV/HDTV Standard). Set this to your liking.

2) This is going to take a bit of explaining:
Depending where you live geographically, whether in a home or an appartment, and the Type of Antenna you are using, your reception problems may be affected by a combination of these. The FCC was not completely forthcoming in letting the public know that the best way to get DTV signals(and Analog) is with an Outdoor Antenna and that indoor Antennas may be useless. Plus most of the 'fancy HDTV touted" Indoor antennas are various degrees of bad when it comes to VHF reception. The new system they(FCC) selected has lowered significantly the power at which TV stations broadcast. So most people using Indoor Antennas may not get all of their favorite channels even with the best of indoor antennas and doing everything right with the 'placement' of that antenna. The same goes for and Outdoor Antenna. Just because you have a premium outdoor antenna and it has worked perfectly for the last 10yrs.(of more) with Analog TV, DOES NOT MEAN THAT it will work perfect with DTV for a few reasons:
1) DTV Signals, because of their lower power, require very deliberate placement of an antenna. Just pointing it in the right direction is not enough. DTV signal reception is a bit like 'Swiss Cheese' meaning if your are getting poor results and think that rotation will fix it, you may be wrong. If you are in the 'hole' and rotate, you are still in the hole. Sometimes moving your antenna a couple feet laterally can make a huge difference.
Why? Because the direct DTV signals coming from the TV stations are in the Kilowatt range (analog was usually more than a million watts!) They have now become more sensitive to interference from the back and sides of your antenna. Some sources of interference can be a reflection of the same signal off of a nearby tower or building which cancel some of the direct signal resulting in low or no signal. FM Radio transmissions, an Analog TV station from Canada(they don't go digital until 2010) operating on the same channel as your favorite Channel's new channel assignment can inject so much noise that your tuner cannot process it. Remember, runnig through just about every neighborhood are many other Wireless/Microwave Services: Phone, Internet, TV, Paging Systems, etc.. These, too can ave some affect.
So by moving your antenna to a position that I refer to as the "Sweet Spot", you are allowing your antenna to get more of the direct signal and 'de-tune' the unwanted signals from the back and sides.
Why did the channels you found before not show up the next time? Well, based on your current antenna's position and the signal strength its receiving from those stations, the level may have dropped off due to some of the above. Every DTV and Converter Box has a 'lower signal level cut-off point', meaning it needs so much signal before it cuts off. Because DTV either gives you a perfect picture or its gone, the old method of looking at picture quality to make sure your antenna was placed correctly is not valid. So the maker of the Converter Boxes put "Signal Strength Meters" in every box. Get to know where this is. It is your new best friend and is the only way you can be guided when placing your antenna. It can usually be accessed by pressing a button on the remote labeled :"SIGNAL or METER" and sometimes "DISPLAY or INFO". Some Boxes, like many DTV Sets, require you to go into the menu settings to locate this feature. Usually the sinal strength is indicated by a RED, YELLOW & GREEN scale and may have a % indication. To have reliable pictures, you should be above 60% or in the GREEN Zone. If you are only getting less than 60% or Yellow Zone, you may see the picture break-up into little squares or 'Pixelate' as it is known. If you are in the RED Zone or less than 30% your Box or DTV will not lock and give a "NO or LOW" signal indication. It is normal to see the meter indication 'hunt' or move up and down a bit due to atmosheric conditions and the swaying of the TV station's Towers.
Gee, Can you tell that I explain this often? Yea, I work for a TV Station in Cleveland. This switch has generated more than 700 phone calls all of which I attempt to call back on a daily basis. The public needs to be re-educated on this new system and how to make it work for them. Every installation is unique. In many cases, it will require the help of a qualified TV Antenna specialist to find the "Sweet Spot". Those of you in Apartment buildings, and anyone that may be a shut-in or senior with limited help or finances, my heart goes out to you.
Hope this helps!

Sep 09, 2008 | Projection Televisions

2 Answers

HD Picture is Scrambled, but Has Sound


I had the same problem
you have to set up the componant on DTV.
the signal my be hd 1080i and the only connection with componant that can support this is the DTV port.
the other componant connections only support 480,
good luck

Apr 06, 2008 | Mitsubishi WS-55711 55" Rear Projection...

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