I think that's not a problem with the motherboard. If you use the TV for HDMI connection for Play Station, STB and similar devices, you will never see this famous message "Out of memory. App is closed," and now the new renamed "This app will reset to free up more memory." The problem occurs when a longer time used youtube application and then run other applications such as smart share or web browser. By simply restart everything again works great until you turn on youtube, web browser, SMARTSHARE ... For example, if you turn on the TV and watch TV programs will never appear this message. I think they are in the service replaced the motherboard as an excuse, but in fact the biggest problem is bad webOS! We'll see if I'm right. I would ask the user to whom they replaced the motherboard to let us know whether the problem reappears with memory or motherboard problem though. Another thing that is very strange that LG has produced millions of tv sets and each has a problematic motherboard.