Question about LG RZ-20LA70 20 in. LCD Television

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LG RZ20LA70 - black screen

Hi, when i power on this screen, and i cycle through the AV and other inputs, im getting a black screen...however the blue box in the top right hand corner that shows the channel name is showing ok..and also the black/white fuzzy screen appears on one of the channels, but then goes back to black. When i select MENU, if i look real close, i can just make out the menu options......any ideas?



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4 Suggested Answers

SOURCE: Black and white on av channels?

fixed problem by replacing board on control side
part sourced for £85
now all ok

Posted on Jul 10, 2008

  • 2 Answers

SOURCE: built in tv guide channel

It's possible there is a flaw with your TV but more likely the listing information is being blocked. Many cable companies do this, likely another reason to force you into buy/leasing their equipment. This should not be a problem with OTA.

Posted on Aug 20, 2008

  • 2 Answers

SOURCE: tv guide on our LG tv

It is NOT the main board. You need a V CHIP UPGRADE "epk file" Email me and I can walk you through it, very easy Put "TV GUIDE" in the subject line

The problem started with TV GUIDE messing with things while they are doing their digital conversion

Posted on May 14, 2009

  • 834 Answers

SOURCE: LG tv shows av inputs as black & white

you need to plug all three colors in not just yellow
red blue green need to be pluged in their respective colors

Posted on Nov 28, 2009

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This is Jon Baker from Sacramento, CA have a TV LG 50PZ55-UA have a lot of PICs that show model of the TV /boards - can you help on which board maybe the problem?

If you wish to get some details; check the site linked here. Pull up older posts.
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.
Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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Sounds like the problem could be in the power supply of the TV. Have a technican check for defective capacitors if you're not equipped to do the job yourself.

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I just get a blue screen...sometimes i am able to get the input menu

Do you get a blue screen using any or all inputs, ie, the av scarts plugs with a dvd vcr, freeview box etc ,a blue screen would suggest no signal, is there sound at all ?

Nov 03, 2010 | Flat Panel Televisions

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LG tv shows av inputs as black & white

you need to plug all three colors in not just yellow
red blue green need to be pluged in their respective colors

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Ours is crapping out just like yours. Picture goes out, "black and white squiggles" appear in the top left of the screen then TV input appears, then it either repeats or gives me my picture back. This happens with both the HDMI slots (tested all 3) and both Component slots. Seems like the bulb or a circuit board on the TV is faulty. What a piece of ****, never spending another dime on LG products. I did get it to come back by hitting the back of the TV with a good slap, but it gets really annoying.

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hi i could be wrong but normally a blue sreen means its on a AV channel i may be wrong try pressing the av button 3or 4 times

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Need sky remote code for model lg 42 pc56-zd

i have found these codes for lg,i dont know if they will work but you have nothing to lose,
398 191 459 245 389 060 275
065 244 405 318 037
NRC1/20F080F C114E20 CF21A50F WF32A14T RZ20LA70
28CB10RX, CB14F84, CB20F84X, NRCB14F84TX, R128CZ10RX R132CZ10RX 28CZ10RX
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Check to make sure it is on either the AV 1 or AV 2 channel

Nov 25, 2008 | Flat Panel Televisions

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