Bests & Worsts Reviews from Amazon

I ordered this TV (55LM8600) after years of purchasing and trusting the LG brand, as replacement for an older 47-in non-3D LG LCD TV. While the delivery and appearance are top notch, this new TV either freezes or restarts every 10-15 minutes. When I first experienced the issue I contacted LG and they tried to troubleshoot over the phone, verified it was not a network/power/signal issue and a technician was dispatched for confirmation. The technician verified the issue, but noted that he "thought" it might be the main board, and that part was on back-order. The technician then recommended that I contact Amazon to replace. Amazon replaced it without issue. However, the replacement has the exact same fault. Upon contacting LG, I am told to once again contact Amazon as they believe I need another replacement. Upon contacting Amazon, I am told that a replacement would take a month or two as they are out of stock. I then contacted LG a final time and asked for a supervisor. I once again explained my issues and was told that a technician would need to be sent to diagnose the issue and order parts, parts that may be on backorder. LG would not offer a replacement, only a repair, but the repair might not work and it would take a few months to find that out (which would be outside of my Amazon return window). I am not sure what happened to customer service at these electronics manufacturers that after two malfunctioning TVs that it is apparently too much to ask to have them send out a technician with a replacement TV. I cannot be upset at Amazon, they helped where they could, and now unfortunately are out of stock of replacements. It appears that I will not to get to try a third time and will now think twice before buying LG products again.