What happened to the 2nd Q90T that developed problems? What were the problems, if you don’t mind me asking?Well my first Q80T was perfectly clean, as was my 2nd Q90T, until after about 2-3 weeks. I thought it was my environment until I noticed replacement sets arriving with contaminants.
If your set is a few weeks old already and has passed a pixel test, you should be fine. Since yours was from a boutique, it sounds like there's just a panel lottery. I'll try more sets until the vendors cut me off. Most seem to be running low on Q90T 55s anyway; perhaps a new batch is on the way.