Random Temporary Bleeding on LG 55LM6700

Hi All,

I previously had a 55LW5700 which was replaced by LG for a LM6700 because the first set had loads of bleeding.

Few months into the new set I get random and temporary bleeding on the bottom right hand corner. It had been gone for weeks and was working fine(No 3D used in the last couple weeks) and Last night i watched a bit of 3D content an this morning the bleeding is back.

I have tried loosening the screws at the back but no luck.
Also I've turned down the Backlight to 30 /100

There is a firmware update available but I think that's not relevant in fixing the issue.

Please advice

AVR - RXV 467
Source - PC - AMD 6000 Series Video Card

Setup

Video Card to AVR , AVR to TV , All Via HDMI.

Thanks in advance

Thanks for your reply! That was the exact issue i had with my old set. The minute i would turn on my air conditioning up it would induce huge amount of bleeding. But the air conditioning is turned off during this part of the year.

Strange thing is that by the next week it will sort itself out(most of the time). I only use my set on weekends.