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Unusable signal on rca lcd tv

I was watching the tv and unusable signal came up. whats up with that?

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I have the same problem. i looked all over the net and found out that its the digital board, there is a fuse on the right hand side that has a f1 under it and a cover on it. that is what needs to be replaced, but i havent done that myself yet. have to find the fuse at a electronic store first.

Posted on Sep 01, 2008

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Unusable signal shows up on screen.Cannot get a cable signal.


Hi friend I would recommend that you plug your TV into a cable signal that is currently working on a different site and see what the TV response is if the TV has the same response the RF modulator on the port panel could be faulty if TV works fine then I suspect your cable signal strength and quality at your home is either non existent or extremely poor and will have to repaired. Good luck hope its not your TV.

Dec 17, 2010 | RCA L42WD22 42 in. LCD Television

1 Answer

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

Jun 28, 2010 | RCA L46WD22 Television

2 Answers

42 RCA TV flashing unusable signal


Ur backlight video board it dead,must replaced.

Dec 05, 2009 | RCA L42WD22 42 in. LCD Television

1 Answer

I can not connect my rca dlp HDTV to my hp laptop. I tried using VGA wire, laptop is fine but TV is showing unuseable signal


A lot of TVs only accept limite PC resolutions. Try 1028x768 60hz this normally works.

The Error message doesn't mean the TV or PC is not working, only that the signal is not compatible. try all resolutions until something works.

Jun 23, 2009 | RCA L26HD31 26 in. LCD HDTV

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

Mar 13, 2009 | RCA L42FHD37 42 in. LCD HDTV

1 Answer

UNUSABLE SINGNAL


this and many rca models need a special kind of solder and paste to correct the tuner soldering and some other spots that need this kind of solder that withstands heat better and will hold longer
hope this helps

electech

Oct 23, 2008 | RCA 27R410T 27" TV

1 Answer

Unuseable signal


WHAT HAPPENS WHEN YOU USE A DVD INPUT (AV) OR A SAT/CABLE BOX CONNECTED TO THE AV INPUT'S ,,IF IT CLEARS UP YOU HAVE A SIGNAL BOARD BAD BUUUUUUT YOU CAN BYPASS THAT BOARD AND SAVE MONEY JUST BY USING THE AV INPUT...TUNICA

Sep 25, 2008 | RCA P52926 52" Rear Projection Television

2 Answers

Unusable Signal


Hello Mike:

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.

Aug 19, 2008 | RCA L42WD22 42 in. LCD Television

1 Answer

Help rca 46inch


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

May 31, 2008 | RCA L42WD250 42 in. LCD HDTV

1 Answer

Unusable Signal


I have exactly the same problem, with my RCA F27645. I can find no answers on the internet, so far.

I have 3 ideas.

1) The digital signal receiver must not be receiving the DVD signal properly.

2) Coaxial cable receiver (the little pin plug) problem

3) Digital TV (broadcasts) causing havoc on older TVs.

Mar 27, 2008 | RCA 27V530T 27" TV

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