20 Most Recent RCA LED55C55R120Q 55" 1080p 120Hz LED HDTV Black Questions & Answers

Cut the wires off an old headphone jack and put the jack in the headphone port at the back of the tv. It should turn off the speakers on the TV.

i change the power supply and when restarte the picture is upside down

Having the same damn problem it's not in the settings menu or I would have changed it would need to know how to change this to regular time it's very annoying

If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

went to sleep mode?

Vertical lines on the screen are caused by a failed screen, not any electrical components inside the TV

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Sounds like the remote control is faulty. Contact any service technician. It needs cleaning. To clean it, you have to open the remote control. Check the remote control for its infrared emission. Check it with fresh batteries. If you wish to get more details about how to check a remote control, please visit this site. One among the posts has details about it. Surf the site with patience. http://electronicshelponline.blogspot.com/

Jason, good you have narrowed down the problem. So tv 1 does not detect channels. Re-connet and try making sure all cables are properly connected.

It is not predictable. Electro help

Sounds like software corrupted. Update the firmware. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

If your TV is connected to a "cable" box, e.g. you're using cable TV ... then it is the cable TV box that determines what you can get (based on your cable subscription). Yes, I know that some cable TV and satellite TV service providers will only deliver HD digital channels when you pay an additional (monthly) fee for HD digital channels. If you plug the cable directly into your TV (i.e. not use the cable box), you may be able to do a channel scan on your TV, to pick up the digital channels ... but you will loose the convenience of using the features that your cable box provides .

Try to check the power supply output side where anything could came into contact with positive and negative line for which when you press play button then it shuts down.

RCA video cables handle analog signals. HDMI cables carry digital video signals. You need a converter. If you are using a component video converter, check if you swapped two of the three RCA video cables. (There are some A/V projectors that can do the translation of RCA and HDMI internally. Most TVs do not.) I hope this helps. Cindy Wells (One of my family's TVs used a dongle to condense the analog video signal to a single port, swapping blue and green gave a black and white output, IIRC.)