Question about Sharp LC42SB45U 42 in. LCD TV

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LCD tv turns on 1)sound fine, 2)picture is grayish vertical lines for 15-20 minutes than complete picture comes on; works fine until it's turned off

It is a 4 yr old Vizio model VL320M - never had any problems until a week ago.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: TV No Picture

My 32D40U would turn on for 5-10 seconds (Please Wait would appear) and the screen would go black. Sound Normal. It would also sometimes do this after running 5-10 minutes. I read somewhere that the inverter board would come loose and lose proper ground. I took the set apart, removed the board, and cleaned up the grounding points. I reassembled using some copper paste on the ground points and LockTite on the screws. I used some contact cleaner on all the connectors going to the board. I noticed two cables that are covered with copper shield tape where too tight at their connectors and repositioned the tape to give them some slack. The problem hasn't occurred since the fix.

Posted on Mar 22, 2008

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  • 346 Answers

SOURCE: Blue horizontal and vertical lines

poor convergence

Posted on Nov 12, 2008

  • 1 Answer

SOURCE: Sharp aquos lcd screen goes blank

i was having these same problems with the screen going black, and i found that when i hit the back of my tv it would work sometimes. so, i improvised on some of the advice on this page and so far no problems. here is what i did (its very easy):

1. lay the tv on the floor and take off the back panel. (i think 12 screws)

2. on the right side of the tv (as you are looking at the back) you will notice a large metal covering that is held in place by 6 screws. unscrew these and remove the metal cover.

3. you will notice that the three screw holes on the left side of the board have some sort of metal or solder around them, in sort of a star pattern. when i looked closely i noticed that most of the metal (solder) was tarnished, or kind of blackened. (this must mean that the ground screws werent getting a good connection and this would explain why it would work sometimes when i hit it because it would vibrate the screws enough to get a good connection! )

so, take a pencil eraser and erase all the black or tarnish off the metal surrounding the screw holes. thats it! (to be safe i took some sandpaper and cleaned up the screw holes on the back of the metal covering, but i dont know if that was necessary)

at this point i followed another gentleman's advice to do a hard reset. this involved unplugging the 8 connections although i dont know if this was really necessary because i believe my problem was a ground issue. i did it just to be safe. his advice is on this site if you want to do this step.

4. i put everything back together and it worked! i performed a soft reset at this point which puts your tv back to factory settings. just go to menu>setup>reset>return to factory settings? yes
this will turn your tv off and back on. that's it. so far so good for me.


Posted on Dec 18, 2008

rulds2008
  • 3866 Answers

SOURCE: Two red vertical lines down 32" Sharp Aquos LC-32P50E LCD TV

There are solutions for stuck "and not dead pixels" Here are a couple idea's to try and please do not rate me bad if don't work!! That would not be nice as i do not get compensated showing your solutions I get them by your "good ratings" Hence do not use "Thanks for Trying" rather helpful or fixya will do now here are the websites:
http://www.wikihow.com/Fix-a-Stuck-Pixel-on-an-LCD-Monitor

http://www.jscreenfix.com/basic.php

If you TV can hook up to a computer witch it can through servral means then you can use this information. But However do not rate me Thanks for trying if the darn thing just dont unstick the pixels... Thank You for using Fixya.com
"were we can save you hundreds of dollars on repairs" It has been my pleasure assisting you today. Rulds2008- Expert Top 10 Fixya.com

Posted on May 15, 2009

  • 100 Answers

SOURCE: Horizontal and vertical lines on the screen

i do no know take it back to the shop you got it from

Posted on Jun 04, 2009

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