I just bought this thing and when I unpacked the unit, and plugged it in, it powered up fine. However when I connected my DirectTV I could get no picture. While I was trying to figure that out, the TV went off and won't power up.
This model of TV has a known issue with bad filters on the mainboard.
It has been known to cause the following problems:
The only fix is to replace the mainboard, Contact LG as quick as possible.
Posted on Jan 09, 2008
There are multiple part numbers for a Main board for this tv. The best thing to do if its under warranty is to contact LG have it serviced through them. If this is not an option for you then you have a couple choices.
1. Have a repair shop fix it for you. (EXPENSIVE0
2. Sell it for parts
3. Open it up and try to identify the problem yourself and save yourself a few hundred by fixing it yourself.
I personally would fix it myself. Send me a description of what your issues are with this tv and I will let you know what might fix it.
Oh and the best way to get the PN for your main board is to look inside and get it off the board in your tv.
Posted on Mar 07, 2010
Where do i find and how do change the lamp
Posted on Jul 06, 2011
An expert who has achieved level 2 by getting 100 points
Can you post the part number of this MAIN BOARD please
Posted on Mar 01, 2010
Nov 02, 2013 | LG 42LC7D-UB Television
Jan 20, 2013 | LG 42LC7D-UB Television
Feb 12, 2011 | LG 42LC7D-UB Television
Sep 25, 2009 | LG 42LC7D-UB Television
Mar 20, 2009 | LG 42LC7D-UB Television
Mar 16, 2009 | LG 42LC7D-UB Television
Dec 20, 2008 | LG 42LC7D-UB Television
Nov 17, 2008 | LG RU52SZ30 52" Television
Jul 31, 2008 | LG 42LC2D 42 in. LCD HDTV
Aug 30, 2015 | LG 42LC2D 42 in. LCD HDTV
1,073 people viewed this question
Usually answered in minutes!
We have the same problem with this TV. This is the second one we've had, the first one was taken back and replaced but the new one has developed the same problem. The TV works for a few weeks then one day when I turn it on the LED on the front turns green and the backlight comes on but there's no picture or sound. I am unable to access any of the menus or switch between inputs, it's just a blank screen. Have already tried the following:
Removing all cables and reconnecting power only 10 minutes later.
Attempting to switch between inputs, but there's no display to confirm what's happening.
Power and ariel attached only.
Nothing has helped so far. It's still under warranty so I'll be trying to get a refund on this. Is there something I'm missing, perhaps a way to reset the system?
have a similiar problem. my tv comes on but i can't adjust the controls by remote or tv. menu comes on screen by itself along with other other menu functions. my stay on a few minutes or a few seconds. can't figure this thing out.
can any body help me?
I contacted the store where we bought the TV and they picked it up and took it to an authorized LG repair shop. As it turns out, the mainboard needed to be replaced. We now have the TV back and it is working great.
TV worked great from March when it was bought till the end of September, then one day screen died, green light was still on but could not get any image. Sent it to the authorized repair shop, they replaced main board. Just came home and plugged it in...not even 20 minutes and it's out again...so back to the shop.
×