So I bought a LG 42LH30 off a lady that only the right half of the screen was working. So I took it apart no bad caps and I disconnected the left side ribbon cable that goes from the lcd panel to the t con board ad I re seated it and it worked fine no problem. Turned it off and then back on worked like a charm. So I let it sit for a day and come back the next day and just plug it up to power no video and it gets the whole screen snow like usual but you can see a line down the center dividing the two sides of the screen and then only a couple of times the screen on the left side at the top would flash a couple horizontal lines but only a couple times. So I hit the top of the tv and then it works like a charm. Is this a bad connection at the circuit board on the lcd panel. The tv is from late 09.
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LG 42LH30 half screen kinda not working
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Re: LG 42LH30 half screen kinda not working
You may need a new T-CON. You might also want to try cleaning your connectors and cable ends with electronic contact cleaner.Last edited by capkid; 08-02-2013, 07:47 PM.
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Re: LG 42LH30 half screen kinda not working
I didn't think to use electronic contact cleaner. I will try that on the ribbon cable and see. I had a similar issue with a 26 in samsung before where the picture was not on but the backlight was on and I took the ribbon cable out and reseated it and it came right in. But if you let it sit for a day or two it would do it again and sometimes if you hit the top it will work fine. Come to find out it supposedly was a problem with the lcd panel cause I swapped the tcon on it and the lcds cable and it didn't solve it. But I will try the cleaner and let ya know what happens
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Re: LG 42LH30 half screen kinda not working
It looks something like this:
https://www.badcaps.net/forum/showthread.php?t=25371Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: LG 42LH30 half screen kinda not working
I've fixed 42LH3000 with bad tab bonds, common issue with these AUO-based LGs.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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