Contacted LG and the technical support had no clue about the problem, oh and did I mention that they ignored the 2 e-mails that I sent them 12 days ago.
It was no surprise either that the official firmware updates for all the LA5700/LA6200/LA6900/LA7400 series available at lg.com are corrupted...
I just bought a 42" LA6200 and it's showing thin white horizontal lines that flash/disappear quickly and last about 0.1 to 0.2 seconds, in addition to big weird artifacts that last the same time.
It happens randomly, about 1-5 times per hour, so it's hard to notice them. The big artifacts...
Both have MVA panels.
I have the 42LN5300, there's a moderate color shifting, but it's not nearly as bad as a TN panel, however it doesn't come close to an IPS, and the uniformity isn't good, you can see that the borders look darker.
Here's a macro shot that I took...
LG's website says that the refresh rate for the 39LN5400 is 50hz, which seems strange, but if it's true then it won't be able to show more than 50fps. Don't buy it.
EDIT: All the australian LG models seem to be 50hz. I guess you're out of luck >_<
The 5700 is also out my budget. Has anyone...