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No picture sound ok rca 46la45rq

Black screen, powers on fine, sound ok on all channels

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Sounds like backlight is dead. Shine flashlight on screen. Can you see video slightly. Replace inverter or some sets have inverter as part of power board. If led set replace led driver board. Also that may be part of power board.

Posted on May 13, 2014

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Posted on Jan 02, 2017

SOURCE: No picture, sound ok

I have a similar issue. Sometimes the entire screen goes black and sometimes only one-half - either the top or bottom half goes black. The only solution we have found is to gently tap the TV (usually the front side) and the picture will come back for awhile. It almost seems heat related as it only goes out after the first 10 minutes of use. There must be a fix to this.

Posted on Sep 28, 2008

  • 1779 Answers

SOURCE: Picture but no sound on two cable channels. All

Make sure under the Audio Menu that you have SAP turned OFF

Posted on Jul 09, 2009

  • 458 Answers

SOURCE: 42" LG Plasma tv, no picture - black screen, but have sound.

Most a likely a problem with your Y-Sustain board which will then not drive the screen giving a black picture. The fuse on the board may be open circuit & need replaced but most likely you will need to have the sustain board replaced.

Posted on Oct 28, 2009

  • 19 Answers

SOURCE: Polaroid 19" TV TLA-01911C has no picture. Powers up, see logo

To add to this solution above - I had the capacitor replacement and there was still an issue. Turns out the solder connection to the lamps themselves was very very poor causing an electrical arc (the scratching noises people are hearing) - then the inverter shuts the lamps down as it should. Fix lights!

Posted on Dec 10, 2009

milkburp
  • 416 Answers

SOURCE: no sound on some channels, other channels fine

Your SAP/MTS function is most likely turned on. This feature has 3 modes: Stereo, Mono and SAP. Stereo and Mono are easy to understand, it's the SAP that can get you. SAP stands for Second Audio Production. It is used to provide weather, information or an additional language translation of a program. Some broadcasters simply transmit the mono audio over the SAP audio channel when the are not using it for other purposes. Other broadcasters simply do not use it, which does not give you any audio. Look on your remote for a SAP or MTS button. If you do not see one, look in your TV user menu for this feature. If you are using a cable box, look in the audio menu of the cable box. You are looking for something set to SAP... just change it to STEREO. I hope this was helpful.

Posted on Mar 26, 2010

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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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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/

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Check and replace its main power supply regulator board as card basis. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
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Black screen, Audio Fine


Check and replace the back-light inverter board. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
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Most likely the inverter board if the screen is completely dark (black) But if its a very darkt Blue then its the Tcon most likely. You can get either board from www.tvrepairworld.com

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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?

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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
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