DTV Digital converter box

July 2, 2021

Why is the picture not on? Or "Weak Signal" or "No Program" appears.
Please make sure Auto Scan is completed correctly to receive DTV channels.
If not, press Menu on the remote to select Channel -> Auto Scan.

NOTE: Unlike Analog broadcasting, Digital TV Channel information must be received through Auto Scan before watching DTV broadcasting.

Can I watch Pay Cable TV by selecting "Cable" in the Channel ? Input Selection menu?
No. You can not watch Pay Cable TV broadcasting with this DTV Converter box.
If you select "Cable" in Input Selection on the menu, you can only watch free retransmitted Over-the-Air channels.
Why does the Converter Box turn off suddenly after several hours?
The DTV Converter Box is automatically turned off after 4 hours of user inactivity,
as recommended by U.S Environmental Protection Agency to conserve energy. .

If you want to disable the auto power down
1) Press the Menu button on the remote.
2) Select Function -> Time -> Power Down.
3) Select Off or the desired power down time

Can I get a replacement remote for my converter box?
Yes, to order a replacement or additional remote, click here.
Can I use my Universal Remote Control to operate the converter box?
Yes, follow the guidelines below for the different Universal Remotes and Converter Boxes sold at RadioShack.
Digital Stream Digital to Analog Converter Box (Model DTX9900, SKU 15-149)

If the date code on your model is April 2008 (04A08) or later, the following universal remotes from RadioShack will work, with the exceptions as listed below.
1. EPG is the Guide button.
2. PREV is the Last button.
3. Limited functionality.
4. OK button is combined with Mute button. Use Info button for OK.

The Remote Control does not work for my TV. How do I search for programming codes using the remote that came with my converter box?
The remote that came with your DTV Converter Box may not control some TV brands.
Be sure to follow the remote control programming instructions below, or see your Install Guide for specific brand programming codes.
If you cannot control your TV with this remote, we recommend you use the remote control that came with your TV separately,
or buy a universal remote that can control the TV as well as your converter box. (Refer to the previous question.)

1) Make sure the TV is turned on during programming.

2) Press and hold the TV Power button (left side in "TV" group of buttons, not the main converter box Power button in the upper right corner).
The TV Power button has to be pressed and held the whole time programming is in progress. When the TV Power button is released, programming stops.

3) Press the Up Arrow slowly and repeatedly until the TV turns off. Allow time between presses (about a second) for the remote to send the code and for the TV to respond (if it will respond to the code)
After about 105 Up Arrow presses, the remote will have gone through the entire list of TV codes. To try again, use the same procedure, but press the Down Arrow to scan through the TV codes in the opposite direction.

4) Once the TV turns off, turn it back on using the remote and then check that all of the TV buttons work (Power, Input, and Volume +/-). If any of the TV buttons do not work, continue searching for a code from step 1.

Note: If you want to reset the remote back to the beginning of the TV code list, clear the memory by removing the batteries and pressing some buttons on the remote. Then replace the batteries.

I want the picture to be full screen. Why are there black bars around the picture?
The switch to digital allows several different formats of video to be transmitted. The converter box has a zoom feature on it that will allow to maximize the image to best suit your display. Use the Zoom button on the remote to enlarge or shrink the image to your satisfaction.

The black bars around the picture are referred to as the "Windowboxing" or "postage-stamp" effect: The TV picture occupies the center of the screen, leaving black bars above, below and on either side of the picture. This occurs because the digital broadcasts of network stations are in most cases formatted for widescreen HDTVs. When shown on a non-widescreen TV, the image will show black bars above and below.

However, a lot of digital broadcasts are not widescreen. Very few daytime shows, like syndicated shows and reruns of old sitcoms, are widescreen. The stations deal with this by inserting black bars to the left and right of the image to pad out the widescreen frame. On a non-wide TV, the result is windowboxing. That nice 32-inch TV you got five years ago is turned into a 24-incher.

When you press the Zoom button on the remote that comes with the converter box, the picture expands so it fills the screen. But be careful; when the next show comes on, it might have been shot in widescreen. The "zoom" mode will still be on, which means only the center of the image will be visible. The left and right sides will fall outside the screen, but you won´t know that, unless you start pressing the Zoom button again to cycle through a few options until you get to the letterboxed mode.

Do I need a special antenna to receive digital or high-definition TV?
No. In general, if an antenna has reasonable reception for both VHF (channels 2-13) and UHF (channels 14-69), it will also work for digital TV. Most (not all) digital TV stations broadcast on UHF. However, if you are using "rabbit ears" (two straight antenna rods with no UHF antenna loop), you may need to upgrade to a combination UHF/VHF antenna.
How do I get the best audio and video from my converter box?
While the RF or antenna output provides a good picture, you can get better audio and video by using the composite video and stereo audio jack on the back panel. To connect you will need 3 cables with phone plugs to connect these outputs to the Audio/Video inputs on your TV.
Why don´t I get the same stations in digital that I got in analog?
One reason may be that the analog and digital broadcasts come from different sources. In fact, in some instances the digital transmitter can be miles away from the tower that is transmitting the analog signal. So the distance from your location may affect the quality and number of station that you receive. To address this issue, you can upgrade the antenna you are using.
Another reason may be that the stations have not turned on their digital transmitter. Nothing can be done until the broadcaster decides to make the transition. In most cases, people receive more digital stations than they do analog stations and with significant improvement in quality.
What is the difference between "Weak Signal" and "No Program"?
1. Weak Signal appears when the DTV Converter Box can not receive any DTV channels due to weak signal strength.
2. No program appears when the DTV Converter Box received DTV RF Signal without audio/video source, such as when the broadcaster transmits the scrambled signal for testing.
How do I know which direction to point my antenna?
The signal strength meter (METER button on remote) is useful for pointing or positioning an antenna. Go to to see where TV stations broadcast from relative to your location. Go to "Choose an antenna" and enter your address or Zip Code. Choose "View Street Level Map" to see the directions of the broadcast towers from your location. This is useful for pointing directional antennas.
How do I use the volume control on the converter box?
Set your television volume to a level slightly above the volume level you want to use. Then use the converter box remote to adjust it down to a comfortable listening level.
Why don´t the Closed Caption options work for Font Size, Style, and Color?
In the CAPTION menu, set "CC Option" to "User" to change the Closed Caption options. The CC options are only effective for the CS1 to CS6 Closed Captioning. They are not available for CC1 or CC2.
The Setup Wizard didn´t come on when I first powered on the converter box. Can I run the Setup Wizard again?
Press Menu, arrow down to the Function menu, and select Factory Reset. When the converter box restarts, the Setup Wizard will run. The channel scan during the Setup Wizard does not erase channels already stored. To scan for channels and erase previously stored channels, press Menu, Select Auto Scan, and then Rescan.
How do I connect both a converter box and antenna to my TV?
If your TV has Audio/Video (A/V) connections, you can install this bypass loop from your antenna to the coax connector on your TV.

What you will need
* Input line from your indoor or outdoor antenna
* Qty. 1, Analog-to-Digital Converter Box
* Qty. 1, VHF/UHF Splitter-Combiner (15-2586)
* Qty. 1, Six-foot Gold Series A/V Cable (15-3021)
* Qty. 2, Six-foot coax cable with F connectors

1. Connect the input from your antenna to the splitter.
2. From the splitter, connect one six-foot coax cable to the Converter Box and one to the "Antenna In" connection on your TV.
3. Connect the Converter Box to your TV with the A/V cable.
4. Use the INPUT or TV/Video button on your remote to switch between analog and digital signals.

Universal Remote Control does not work. Is there any wrong with U-Remote Control or DTV Converter Box?
The remote that came with your DTV Converter Box may not control some TV manufactures or TV brands.
However, it does not mean that the remote or the converter box has any problem.
If you can not control the TV with the Universal remote control of this converter box, we recommend you use the remote control of the TV and that of converter box separately or buy the universal remote controls that can control the TV as well as your converter box.
(Refer to related information in the Install Guide)
Does the pass-through function work if I unplug the converter box power cord?
No. In order to use analog pass-through function, the converter box must be in stand-by mode (LED Color is red) and connected to your analog TV
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