Question about RCA Scenium HDLP61W151 61 in. HD-Ready Television

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Unusable video signal

When I power up the unit, it says "unusable video signal". The audio comes on for a brief second when it powers up, but then shuts off. I still have access to the tv menus and such. It says this for all video inputs and video signal types. I have tried everything from composite video, to hd video (xbox 360) to even trying to use the built in tuner with coax. No luck. Is there a particular board that has this issue? I have seen this problem on forums over and over, but have never seen a definitive answer, other than, keep re-powering tv till it works... That worked for 6 months or so but got worse over time.

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Re: Unusable video signal - RCA Scenium HDLP61W151 61 in. HD-Ready Television Flat Panel Televisions

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Posted on Apr 02, 2008

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My rca tv has unusable signal onit

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The silver box that you screw the cable to is where you begin to look for this fuse.
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If OTA check your antenna direction and that you have the Channel Setup (from the menu) set to Antenna. Also check if you have the right antenna to get stations in your area. gives the most likely channels and directions. will give more detailed information and more stations. Both sites assume outdoor antennas but the direction information is always good. Look for new construction or big trees that might block the signal. Do you have multiple TVs sharing the same antenna? You might need an amplifier.

If cable, check the Channel setup. Check for someone recently damaging your cable installation (cutting the wires, trying to split the signal to get it for free) Splitting the signal to multiple TVs may also be an issue, get an amplifier of the correct type. Some cable systems may require a bidirectional amplifier.

If you recently had a power surge, see if the TV works with other inputs.
Tuners can be replaced if the TV is worth the labor costs for you.

I hope this helps.

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Sorry but you are out of luck, the unit will need repair. It could come back to life in any moment but most often is related to this:

My previous post here

I have seen a faulty board work perfectly until the power is removed (intentionally or accidentally) an applied again or reset via the power button for 5 seconds. This will effectively disable the +12 VDC Power oscillator rendering the TV unusable.

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"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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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.

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