I got Insignia NS-43D420NA for den. Color temperature is set to Warm, but even so, it it too blue.
There are no controls for grayscale neither CMS under Advance settings. I tried all known to me options to get into Service menu, but without success.
Any advice?
Problem solved. I connected HTPC to this TV and calibrated video output on HTPC. Delta E from > 15 went down to <1.
Gamma and color gamut are improved as well.