Question about RCA L42WD250 42 in. LCD HDTV

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Help rca 46inch

Rca 42 in lcd hd Menu works but no picture, no sound.DVD doesn't work either.The screen is black with unusable signal circulating all around.Changed cable to an older tv and it is working fine.Has to be TV.

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  • yomero261 Jul 25, 2008

    have same problem in this tv set

  • Shadow1021 Nov 07, 2008

    I have the same problem using HDMI cable. I tried 3 cables still same thing
    unusable signal. I'm using the composite and Screen looks really good.
    Not sure I can tell the difference between them and when the HDMI cables were working


  • Anonymous Mar 09, 2009

    Exact same problem. I have been trying to figure something out with the RCA company, but no one speaks English.

  • revlorri May 11, 2010

    I have this same problem...any solutions?

  • Anonymous Mar 23, 2014

    Viewing tv programs off of normal satellite feed ( not HD) picture is blurry. Fuzzy outlines around people and object.

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I have the same problem using HDMI cable, I was able to get it working using composite or RCA
cables. I still cant get it working on none of the 3 hdmi inputs

Posted on Nov 07, 2008

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RCA L46WD22 LCD tv (3 year-old unit)...No picture, tried unplugging for a few hours to ''re-set'' the computer...nothing, tried to view a DVD, nothing, just a black screen with the ''unusable signal''...


The back lights inverter is working because you can see the "Unusable Signal' on the screen, if the inverter is dead, yoo will see nothing on the screen at all.
If the T-CON (LCD controller) is dead, you will see just gray glowing screen with no pictures or text.
You may have problem with video processor in the main logic board (tuner, audio, source selector).
Parts for your TV:
http://www.shopjimmy.com/catalogsearch/result/index/?q=RCA+L46WD22+&stock=all&limit=100

This is going to be difficult repair since you do have a way to try out the replacement board to be sure that is the problem. RCA service person has that advantage of parts in stock to try out.
I estimate the board from Jimmy to be about $150, from RCA will be twice as much, plus labor.

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

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42 RCA TV flashing unusable signal


Ur backlight video board it dead,must replaced.

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Worked fine lastnight but this morning when I tried to turn it on there was no picture, but there is sound


TRY UNPLUGGING IT FOR FIFTEEN MINUTES THEN REPLUG IT IN,KNOW IT SOUNDS STUPID BUT WORKS SOMETIMES

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When I turn on my tv, I get a black screen that says unusable signal. I change the channel, same thing. I try to use the DVD player or another add on and it is still black. My TV is an RCA 37in flat s


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HELLO MAKE SURE ALL THE CONNECTOR CABLES ARE TIGHT ON THE MAIN BOARD IF THEY ARE OK CHECK THE INVERTER BOARD FOR DRY JOINTS GOOD LUCK

SHAUN

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1 Answer

"Unusable Signal"


Ok. PCB means Printed Circuit Board.
It looks similar to the picture down below. A part must have gone bad on your PC board. So, the RCA shop ordered a replacement PC board to fix the problem. It's an interchangeable part. All newer TV now have PC boards, which each one hold a different function.ebc3c7f.jpg

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Rca 46 inch lcd tv, no sound


Go into the menu and change the HDMI Audio settings - the manual will give you a breakdown on this. HDMI is a little glitchy - if you were using red/gree/blue cables before switching to HDMI, you might want to consider going back to them - just an opinion.

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The issue that you are having is with your small signal board and it needs to be replaced, it sounds like the microprocessor on that board is getting locked up.

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Jan 20, 2007 | RCA Scenium HDLP61W151 61 in. HD-Ready...

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