Repair Journal | LG 32CS460-UC.AUSYLJM

LG 32CS460 | 32" LCD TV 

SYMPTOMS: TV functions normally, except the coaxial input (ANT.) shows a picture that is black and white and quite grainy.

DIAGNOSIS: This is a problem with the TUNER on the MAIN PCB.

SOLUTION: You may try to purchase and replace a TUNER if you wish, but my suggestion is to go the safe route and buy a MAIN PCB for this set here.

DIY INSTRUCTIONS: This is a simple board swap. You will likely only need a philips #2 screwdriver. It's helpful to have a bit set just in case, though.

1) Prepare a soft surface (table with towel down or similar) and place the set on its screen with the base stand hanging off of the surface. Make sure the unit is unplugged and allowed to sit for about 15 minutes to discharge. You don't want to have a run-in with high voltages.
2) Remove all screws from the back cover, making sure to double check for ones you may have missed. Note the size and type of screws you are pulling out. Some may be machine screws, course thread (for plastic), etc. They will need to be put back where they came from in order to assemble it correctly.
3) Gently pry up and remove the back cover.
4) Locate the MAIN PCB (it should be easy to find, as it has all of the RCA plugs, HDMI plugs and other inputs on it). If you have the new board, simply compare it to the ones inside the TV. You won't be able to mess it up!
5) Remove all necessary wire harnesses (noting where they go) and screws, then remove the old board.
6) Place the new board in the TV and replace all the screws. Plug the wire harnesses into the appropriate headers.
7) Taking care not to touch any components inside the TV, you may wish to plug in and test the television at this point. If you don't feel comfortable with it, at least install the cover with a few screws before testing.
8) Once it is known that the unit is functioning properly, reassemble the TV and put the base stand back on.
9) Enjoy the satisfaction of a DIY repair!

*NOTE* If you wish to ask any questions or have a comment, feel free to post here or e-mail me directly.