Mulja tv repair portal
Equipment Repairs => LCD TV forum => Topic started by: buncey on December 17, 2012,07:23:33
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lg 42lg3000 just got this set with fault.
when switched on screen is black and gradually turns to white like in photos and when turned on sometimes black and white lines.
i have also noticed theres like water type stains at bottom of the screen. you can see it in picture.
anyone any ideas what faults might be with this tv.
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hi
looks like tcon or screen a lot of lg failing with screen faults
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hi
looks like tcon or screen a lot of lg failing with screen faults
thanks sparky .
in the first picture at the bottom there are like water type stains running along the bottom of screen, im pretty sure this is not a t-con fault and pointing more towards the panel. i might be wrong through?
so im not sure if its worth reparing the t-con as i would think you would see them water type stains once picture if present.
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Have you tried taking the lead out of the tcon?
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Have you tried taking the lead out of the tcon?
no as i do not have the set just yet. do you think them water type shadowy stains you can see at bottom of the screen in the picture i posted ( first picture, with colored lines ) is a t-con fault?
well i have not come across a t-con fault yet that shows this problem.
maybe someone else has?
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So if you don't have the set, how are you going to fix it?
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guy who has tv was going to drop it down to me to repair however after studying the pictures he sent me and seeing a shadowy water type effect at bottom of the lcd screen im thinking its the panel thats faulty.
no t-con faults should cause that problem.
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guy who has tv was going to drop it down to me to repair however after studying the pictures he sent me and seeing a shadowy water type effect at bottom of the lcd screen im thinking its the panel thats faulty.
no t-con faults should cause that problem.
Hola a todos me presento soy de España y deciros que ese problema es de la pantalla pero yo lo he arreglado,ya que me dedico a ello y en este caso esta avería tiene solución sin cambiar el panel. :13:
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Test D.c to D.c converter on T.con its fails to feed matrix.
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Test D.c to D.c converter on T.con its fails to feed matrix.
can you identify the component that may be faulty on tcon board..regards..buggsy1
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I have a fault like this on an LG37 lcd if lefy on for an hour or so it comes to full perfect picture in stages the latter it has bursts of freezing images not sure if t con or main
Ronnie
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THANKS FOR THE REPLIES,
I HAVE FOUND A CURE FOR THIS TYPE OF PROBLEM.....
I HAD A SPARE LDVS BOARD FROM ANOTHER SET SO REFITTED IT AND GOT 100% SOLARISATION SO I REMOVED IT AND GOT THE HOT AIR GUN ON IT AND REHEATED ALL ICS ON THE BOARD TOOK ABOUT 3 HOURS AVOIDING OVERHEATING COMPONENTS.
REPLACED THE BOARD AND CURED THE SOLARISATION ..BUT WHITE BLANCHING EFFECT ON SCREEN.
REMOVED SCREEN AND INSPECTED SCREEN FRAME....AS LDVS BOARD RIBBON IS STRETCHED UNDER FRAME RESEATED CABLE.
THE SCREEN FRAME HAS SEVERAL SPARE MOUNTING HOLES AROUND FRAME 4MM THREADS INSERTED HALF INCH M4 BOLTS AROUND FRAME AND SCREW TIGHT COMPRESSING FRAME.
REASSEMBLED AND CURED THE PROBLEM.
I have a fault like this on an LG37 lcd if lefy on for an hour or so it comes to full perfect picture in stages the latter it has bursts of freezing images not sure if t con or main
Ronnie
:08: