After reading through this thread, I'm hoping you all might be able to help me. I recently purchased the PN64F8500 and it was awesome! Bright picture, beautiful colors, and deep blacks. However, the screen had some defects from the packaging materials. I couldn't exchange it because the retailer had no stock left. Samsung agreed to replace the panel under warranty.
Here's my problem: the original panel reached near 50 fL in Movie mode at 20 Cell Light and 95 Contrast, and over 60 fL in Standard with 20 Cell 95 Contast on peak white 18% pattern. However, the replacement panel barely dings 38 fL in Movie at 20 Cell and 95 Contrast, and 46fL in Standard at 20 Cell and 95 Contrast.
When the tech installed the new panel, he tested two voltages and said they were within spec. I can't figure out why the new panel is so much dimmer with the same settings as before. I already checked all the bug and quick fixes like Eco mode, Motion Lighting, and Black Optimizer, but they all look good. I've tried a Menu Reset, Factory Reset, and a SVC Reset, but nothing has solved my problem.
I read in this thread that some folks saw a decrease in max output after adjusting voltages. I'm thinking that maybe there is a voltage setting that is capping my plasma's peak output. Do you all have any thoughts or suggestions here?
Other than maximum light output capabilities, the sets colors and gamma errors are excellent, below 1 DeltaE after calibration. I realize the current output is well within what we shoot for in dark room and normal viewing calibrations, but I like to crank up the light output when the sun is blazing and I'm watching from the kitchen or dining room. Is my panel defective, or does it fall within the norm for this plasma?