Question about RCA 46 46LA45RQ LCD TV

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RCA 46LA45RQ tv turns on with sound and after 1 second the picture goes out. The blue power light stays on and the audio, but no picture.

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  • RCA Master
  • 74,118 Answers

Back-light inverter board fault. Replace it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magzine" will make surf easy Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Posted on Apr 17, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: RCA L32WD12 32in. HGTV LCD Television

I had the same problem happen this afternoon, so I took it apart, and the source of the problem is the key controller panel (behind the buttons). It's held in place by 2 screws, if you take the case apart, which is literally only 15 or 20 screws, and then loosen the 2 screws holding the key controller panel on, and then use a small screwdriver to space it out from the button caps. Tighten the screws, and put it back together. Just be careful not to let it go too far to the other side, or you'll have a problem with the menu going on and off at random, which is just as annoying.

Posted on Aug 01, 2008

  • 1 Answer

SOURCE: RCA Scenium: l5000yx1 - turns on and off by itself.

Mines did the same thing. I had to get a new bulb $200 on line and pay someone $200 more to fix some wires that had pulled apart when we changed out the light. But now it works great!

Posted on Nov 22, 2008

romsky79
  • 822 Answers

SOURCE: I have a RCA L32HD32D, will be on for 1 to 5 min. later goes off

check secondary power supply. check capacitors and apply fresh solder.

Posted on Jun 01, 2009

  • 668 Answers

SOURCE: My RCA L32HD LCD tv power light comes on and stays

It could very well be the Power Supply. Due to the difficulty in diagnosing it, call a professional to be sure.
Hope this helps,
Skyassoc

Posted on Jul 09, 2009

mpaint
  • 36 Answers

SOURCE: RCA L42WD22YX5 TV green light but no sound/picture

Recommend opening it up and looking at the power board and see if there are any visible Bulged or leaking capacitors.
Bad caps are a major source of computer and LCD no post problems.
If you find em, then just find replacements with the same uF and voltage and solder them out/in.

Posted on Jun 28, 2010

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Tv screen has gone black but still have sound when you shut the tv off and turn it back on the screen comes up but it flashes and goes black again


Hi Bob, The link below is a YouTube video showing how to fix a RCA television(DIFFERENT MODEL) NO picture GOOD sound, Also there's videos down the right side of the link that may help as well........CHEERS..

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Rca 46la45rq has backlight and power but no sound or picture replaced main and inverter boards


Was this the original problem before replacing the main board?
Maybe you have to set the new main board from maintenance menu. Sound and image comes from the main board, so i believe it has to be something about it...

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Aug 31, 2014 | RCA 46 46LA45RQ LCD TV

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46 rca model 46la45rq comes on for just a second then the screen goes black and it only plays sound! what needs to be replaced


Sounds like you have a backlight problem. To verify this, turn on the set and dim the lights in the room. Take a bright flashlight and shine it on the screen. Do you see a faint picture?

Jan 14, 2013 | RCA 46 46LA45RQ LCD TV

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Rca 46la45rq no picture after loud pop


That could be several items such as power supply or main board, or Inverter . You can find out which board by contacting the people over at
www.tvrepairworld.com they will help you determine which board is most likely causing the issue.

Aug 04, 2012 | RCA 46 46LA45RQ LCD TV

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I am currently working on a Sharp Lc37sb24u. I was originally thinking it had a bad inverter board but now I am not so sure. When I turn the tv on the picture comes up with audio for about 2 seconds the...


Did you check the service manual troubleshooting guide yet. You can try disconnecting the power to the inverter board and see if it will stay on and have sound.
Service manuals:
http://elektrotanya.com/?q=showresult&what=Sharp%20LC37SB24U&kategoria=&kat2=all

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

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36 inch RCA tv loses picture and sound, but power stays on


Cable Looses signal power after 20m ... Install signal amplifier
https://youtu.be/AkiKf4G4UE0

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Tv won't stay on


it is a brandnew tv, so expected that it is under warranty,, it best for you to return where you bought so the warraty will not void. Big possible of factory deffect.

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