Question about Sharp LC-32SH12U TV
I have a Sharp LC-32SH12U LCD tv and the screen has been malfunctioning recently. My sound works fine, but the screen takes up to an hour to work. When first turned on it is frozen and gradually begins to show still images of the program on that it should be showing. From what I have read this is most likely the t-con board. I have since taken apart the TV and noticed that the inverter board appeared to have a lot of flux or maybe a little heat damage. What symptoms would I see from each component going bad and how can I definitively determine which one I should replace?
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Posted on Jan 02, 2017
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
SOURCE: Sharp lc-32sh12u...no picture
It can be either the LCD panel driver board, or the worst case is bad LCD panel.
Posted on Nov 19, 2009
Testimonial: "Thanks for the response. I found a PWB board, a Power board and an AV board. Would one of these fix the problem?"
If the red light stays on and the tv does not react to any input from buttons or remote... the problem is one 7 pins integrated circuit on the upper side of the power board .the ic is situated on the right side of the power socket .It costs about 2$ and can be replaced by someone with mimimal electronics skills and a 30w solder iron .
Posted on Apr 20, 2010
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