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I have a 60 inch sharp aquos TV I replaced the motherboard and the powerboard and still not working the sharp sing comes on then goes off after 20 seconds .any ideas?

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6ya6ya
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Posted on Jan 02, 2017

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  • 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

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SOURCE: 37 inch Sharp Aquos. "Failed to receive Broadcast [E202]"

This is basically a message for no signal on the tv, make sure the tv itself is on the correct input for the type of cable used. The inputs are labled by numbers on the back of the tv. The input can be changed by the button on the side panel of the tv.

Posted on Aug 23, 2009

  • 8457 Answers

SOURCE: We have a Sharp Aquos LCD TV 42 inch. When I

Call Sharp for warrenty repair.This problem very common in Sharp tv.Picture will come on turn power on/off button few times will work.But still under Wareenty call to Sharp to replaced the main Tuner Signal board.

Posted on Jan 15, 2010

Testimonial: "Have tried turning on/off a few times but still doesn't work. thanks anyway"

  • 1 Answer

SOURCE: I recently fixed the blinking

i have the same problem. i just replace the power board because of the "green blinking" light. now, light stays green, picture comes on for a few seconds, then blank....

did you fix your problem.

Posted on Oct 07, 2010

bugoy31
  • 1238 Answers

SOURCE: 60' Sharp Aquos tv power bar flashing but TV wont turn on. Any help??

Good day!!!


please try to count the exact number of blinking lights to diagnose where the fault came from..

Also try to open the cover and look for any bulged capacitors on power supply board..

Posted on Dec 19, 2011

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1 Answer

Needa schematic for a sharp 60 inch aquos power supply and motherboard, hit by lighting. Changed one of the fuses.still no power.


Try looking for a second or even third fuse. I have a tv that has two separate fuses one protects the entire unit. the other protects one of the circuit boards. It is mounted directly on the board.

Jun 09, 2015 | Sharp Televison & Video

1 Answer

I have sound but no picture on my tv sharp aquos 20 inch


if you mean have sound but no Pic.or no raster, horizontal section is the culprit. most problem is at the Horizontal output section that drives the Flyback transformer. Pull out that HV cap & test them to ground if there is some arc coming out. No arc means failed output section or the flyback transformer need to be replace..

Sep 25, 2013 | Sharp Aquos LC-20B4U-S 20 in. LCD EDTV

1 Answer

We have a Sharp Aquos LCD TV 42 inch. When I


Call Sharp for warrenty repair.This problem very common in Sharp tv.Picture will come on turn power on/off button few times will work.But still under Wareenty call to Sharp to replaced the main Tuner Signal board.

Jan 15, 2010 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

2 Answers

Line down the middle of my sharp aquos 42 inch


first make sure it does not come from the signal. If its really from the tv and look like a darker line it can come from the lcd control unit but most of the time its a dfective lcd panel

Mar 22, 2009 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

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