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Rca l26hd31 no sound and no picture

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Check its main power supply regulator section circuit.

Posted on Nov 03, 2012

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Rca l26hd31 no sound no picture


First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

Nov 02, 2012 | RCA L26HD31 26 in. LCD HDTV

1 Answer

Cannot connect my pc via hdmi to an RCA L26HD31. TV registers unusable signal. Is the set bad, or did this model not support hdmi from a pc?


If your trying to use a computer with a video card that is not HDCP capable it will not work.You'll need to replace the video card that has hdcp .You can thank Hollywood for that.Hope that helps

Apr 27, 2011 | RCA L26HD31 26 in. LCD HDTV

1 Answer

This RCA L26HD31 TV has always worked fine in other respects... but when I try to connect my pc's hdmi cable to it for use as a monitor, I just get "unusable signal". When this TV was made, hdmi...


Make sure you have set the laptop's display properties to as low a resolution as possible (also make sure the screen refresh rate is 60 hertz) and turned it off before connecting it to the television. Turn the television on first and set to the correct input either hdmi 1 or 2. Then turn on the laptop. When it has booted up hold down the function key and the dual monitor key (either F5 or F8) for 15 seconds for an image to appear on the screen. When you have an image you can play around with increasing the laptop's resolution.

Apr 27, 2011 | RCA L26HD31 26 in. LCD HDTV

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No or picture


Check the power supply and the backlight inverter board, make sure you do have 24vdc feeding the inverter board.
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If you are going to DIY and have proper tools and know safety precaution then please read on:

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

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Jul 05, 2010 | RCA L26HD31 26 in. LCD HDTV

1 Answer

Have sound but no picture


inverter board has failed try shop jimmys on the web

Sep 16, 2009 | RCA L26HD31 26 in. LCD HDTV

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

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