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Sound board on RCA 42 inch TV doesn't work

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  • 127 Answers

Do you know if there is voltage?The voltage came from the power suply line.Are you in the mute by accident?

Posted on Nov 02, 2012

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Posted on Jan 02, 2017

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SOURCE: 42 inch LG Plasma TV - Lost picture

ysus pcb that supplies voltage to the panel is faulty

Posted on Dec 15, 2007

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SOURCE: have a 42 in rca lcd tv ,hsound but no picture

IF the set is under warranty, you should return it.

Do this to see if your set is "sending" the image to the LCD panel.
1) What the set on take a bright flashlight and press it against the screen.
2) Look for the "image" moving around the edge of the flashlight.
3) If you see the "image" then the problem is in the inverter/CCLT or the power to it.
4) If you do not see the "image", you should look at the LCD controller(TCON) for the problem.

Posted on Feb 25, 2009

nicknovikov
  • 100 Answers

SOURCE: how much do amain board cost on a 42 inch vizio tv

shopjimmy.com.check this site.

Posted on Oct 05, 2009

  • 8457 Answers

SOURCE: 42 RCA TV flashing unusable signal

Ur backlight video board it dead,must replaced.

Posted on Dec 05, 2009

mpaint
  • 36 Answers

SOURCE: 42 inch rca lcd tv says unusable signal

This is a very common problem with these models.
The problem is very likely a fuse that has blown, if the following is true:
No Video on any input BUT HDMI and
No Audio at all.
Purchase a fuse, these are freaking tiny from digitalkey.com or mouser.com F1455ct-nd
Pull the back off of your unit
Pull the cover off of the PCB housing. It is the box that contains the hook ups including the cable tuner.
The silver box that you screw the cable to is where you begin to look for this fuse.
About two inches behind this silver box is some numbers printed on the board 7c32 and partially obscured will be 1c33
Using a big magnifier look next to the numbers listed above, you should see a tiny rectangle fuse with an F on it.
This F fuse is a 500ma fuse that is too small for the load
The fuse listed above will have a G on it. It is a 750ma fuse.
Call the repair shops in your area, tell them that you know the problem, have the part and you want to know how much the bench time and labor will be to repair your unit.

Posted on Jul 23, 2010

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42 RCA TV flashing unusable signal


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Rca 42 in lcd it shuts off 5 sec after being turned on


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