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I need your help L42WD22 unsuable signal

You have posted this solution and I have the same problem

If the TV will play a HD input then the digital board can usually be repaired by replacing the fuse on the board. It's not a normal fuse and there is a updated part available so it won't go again. Any RCA authorized service center should be seeing many of these and should be able to take care of it.


I have opened the back cover of the tv and also opened the metal cover of the junction/connection box...don't know what it's called the one that has the shielded rf tuner.

Know I'd like to fix my own problem but the thing is that I don't know where the digital board is situated at and what fuse people are talking about.

I have some experence with electronics so I figure I can fix this myself with a little bit of help from generous people.

Thanks.

Mike from Montreal, Canada.

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  • Bulldogue Oct 02, 2008

    Ok thanks, I have fixed it already with the part # you have specified. Cost $7.05 cdn



    Mike

  • mikeim Oct 31, 2008

    I have the RCA L42WD22. The "Unusable Signal" popped up a few days ago. QWERTY957's solution was dead on. It was indeed the fuse. Replace it with an F1455CT-ND which can be found at
    http://search.digikey.com/scripts/DkSear....




    The cost from Digikey was $0.81 for the fuse. I bought 5 (just in case) and the total cost was $6.66 which included shipping and tax. It took a couple of days to receive the fuses and about 30 minutes to put the new fuse in, put it all back together and back on the wall. I did find it easier to just piggyback the new fuse onto the old the one. The tip on my home soldering iron wasn't quite small enough to get between the other components.



    Thanks for the help.

  • slikk Dec 23, 2008

    Hey i have same problem, where can i get that fuse in montreal please?

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The part number is 275819. It is located near the tuner and has the location 7C32 on the board next to it. You may want to get the part then you can see what it looks like to make it easier to find on the board.

Posted on Oct 02, 2008

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Roy, change your cable, must be faulty and not giving a signal to TV.
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PICTURE SEEMS TO BE BLURRED WHEN ITEMS MOVE FAST ON SCREEN, ESPECIALLY PERSONS IN CLOSE UP.


The Sony Bravia KDL-32BX320 generally gets excellent reviews (4.5 stars out of 5) from owners, so I have to wonder what you're watching.

This is an HDTV and should excel when provided an HD signal to display. SD (standard definition) signals often look worse on an HD display than on an SD display. An HD signal is only available via the following ways (reference the image below):9_27_2011_4_28_11_pm.jpg
1) An "over the air" (UHF / VHF) antenna is connected to the cable / antenna input and there is a broadcaster of HD content nearby (only an over the air antenna can input HD signals to this jack - no cable boxes, etc.).

2) An HD Cable TV, DirecTV or Dish Satellite set top converter, Blu Ray Disk Player (or other HD source is connected via HDMI or Component RGB jacks.

3) An HD video played back from a computer hard drive connected to the VGA jack (when the computer is equipped with a modern processor and video card).


You will NOT be able to view HD video if:

1) The source material is a SD (non-HD) source. An over the air antenna will not provide HD signals if the broadcaster does not have HD content to show or is not capable of broadcasting in HD. Digital is not necessarily HD.

2) The source material (other than over the air antenna) is connected via Antenna / Cable jack.

3) The source material is connected via Composite jacks.

The USB jack is generally not an input for motion pictures, but may display stills - depending on the TV's ability to play the format they are stored in (jpeg, gif, bmp etc.).

Hopefully, this will help you solve the problem you're having with the picture. Good luck!

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Is this TV digital


This is not a digital TV. This TV has only an NTSC (analog) tuner. A converter will be needed to tune digital broadcast TV stations, your CATV or satellite company supplies a converter to allow this set to display programs.

The display is limited to "480P" resolution, called "Enhanced Definition", which is a step up from the traditional NTSC standard of "480i" resolution or "Standard Definition". ("P is "progressive scan" and "i" is "interlaced scan"). Progressive scan provides a better picture quality when compared to interlaced scan images. High Definition or "HD" is a signal that contains data that allows display of images with 720P, 1080i and 1080P resolutions (the larger numbers indicate more information, or higher picture quality). Your TV will receive all signals, SD, ED and HD, but will down convert to ED. Signals can be brought into the set via 2 composite-video connections, 1 each component- and S-video, an RF antenna/cable-box/VCR input, and a 15-pin D-Sub analog RGB input. More info can be found here.

I hope this helps and good luck! Please rate my reply. Thank you.

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There's only one way to get that TV to switch from 480i (which is an SD or Standard Definition signal) - that's to provide it with an ED or HD resolution signal (a 480P signal is often called ED or Enhanced Definition while 720P, 1080i and 1080P signals are called HD or High Definition).


steve_con_14.jpg
The old standard yellow composite video cable.
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You will not get ED or HD signals through the old composite RCA phono jacks (usually yellow in color), either. You'll need to use an RGB (red, green and blue) component video cable, HDMI cable, DVI, or other type supported by both your TV and the video source (CATV box, Blu Ray disc player, Satellite converter, etc.). More on this, later.
steve_con_15.jpg
RGB cable.

steve_con_16.jpg
An HDMI cable - this provides Digital audio signals, too.
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steve_con_17.jpg
A DVI cable.
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First, you'll need a source capable of sending ED or HD signals. This can be a progressive scan DVD, Blu Ray player, HD Cable or Satellite converter, or a simple TV antenna. Not all DVD players are capable of the 480P progressive scan output - it must be labeled as such. The DVD movies are not labeled progressive scan as they all will play back at 480P if played in a DVD player capable of progressive scan, otherwise they play at 480i. A stand alone Blu Ray player or one in the Sony PlayStation 3, the older HD-DVD in the Xbox360, (it is important to note that the Nintendo Wii can output either 480i or 480P signals only when connected with their special component video cable), "set top boxes provided when you choose HD service from your local cable provider or satellite TV provider are the main sources for signals better than 480i. As mentioned above, the old standard yellow video jack is not capable of supporting signals better than 480i. You must use the HD jacks and cables between to get these signals into your TV.
steve_con_18.jpg
The Wii 480P cable assembly - includes stereo audio, too.


Lastly, if your TV has an ATSC tuner (it is not uncommon for it to have an NTSC tuner and CATV tuners as well), you can input a UHF antenna directly into the the antenna terminals on the TV. Broadcasters in most areas have been moved into UHF bands - but some areas have one or two that operate in the VHF bands still. Check antenna web for information and help selecting antennas and broadcasters in your area. The nice thing about the antenna method is that no other cables, converter boxes, etc are needed to enjoy HD signals - plus - they're free!

Just remember you need a source capable of ED or HD signals and a way to get those signals to your TV. The yellow composite cable is from days ago and only passes 480i signals.

I hope this helps and good luck! Please take a moment to rate my reply - thanks!

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