Samsung SM960BG vs. SM931BF

For God's Sake NOT SM931BF. This will be waste of money and very big mistake for you! I had one SM930BF which has panel failure and was replaced by SM931BF. Last one is awful as quality, ergonomics, blacklight homogeneity, colors are bad, there is one awful blue LED somewhere behind power button which cause pain into my eyes even if i look at this terrible thing for only ten minutes. If you switch ON this LCD and feed signal it produce some strange noise like working low speed FAN inside, if it is OFF, noise from power supply is still there, but around 13kHz. I don't know what to do with this thing - to throw it, to brake it, or I don't know. "Supplier" doesn't take care of my opinion about this "product". Finally yesterday I succeed somehow to set-up this "thing" to show almost acceptable picture. Problem with LED was solved by disassembling LCD and painting ugly blue LED's with black permanent marker - now they are less visible. Noise is coming from power supply, there is nothing, that can be done in this way to "improve" behavior of this LCD. For me, personally i will avoid to buy any Samsung product from now... In fact, SM931BF is NOT Samsung!!! It's some chinese bullshit from Hann Star. Only one Samsung part is one chip with 100pins on main board.... Be careful with this "manifacturer", you may get bad surprise...