LG 3D Smart TV Rebooting problem. Review on LG 32LE4600

I have purchased Lg smart 3D TV model # LM 6200 in US and brought in India in March 2013. Within a couple month of use its SMPS had blown off which I got it replaced from LG service center.It cost me Rs2500

Now I am facing another problem from last couple of months. The TV is rebooting by itself randomly. Technician from LG service center visited couple of time after my repetitive complain. Initially he diagnosed power cord and power source problems. I replaced power cord and also put V guard stabilizer ment for LED TV but the problem is still persisting. Now the technician is saying that the TV mother board is having issue and quoted Rs 2600 for replacement.

I am not sure whether motherboard is the root cause of problem or something else.

I am extremely disappointed with the kind TV I purchased from LG. I have been using various product of LG which includes Nexus 4 mobile, LG refrigerator, LG music system, LG MW oven and all are having some snags. Be aware of LG product. They are not all reliable.