I haven't read through this thread so forgive my ignorance, but are these blobs generally obvious or more visible with certain content? What's a good way to check for them?
I have an April 2012 build VT50, so it's presumably from a very early run of the sets, I do get some mild buzzing but would like to identify any issues sooner rather than later so I can replace with another plasma. I'm still covered by Geek Squad for the next three years or so.
desktop + headphone Sonus faber Toy monitor|REL T Zero|Sony UDA-1|Sony MDR-Z7|Sony MDR-1000X|Audioquest NightHawk|Ultimate Ears Triple.fi 10|Sony NW-A35
ht Sony A1E 65" OLED|Monitor Audio Silver RX6, RX Centre, RX1|SVS SB-2000|Sony STR-ZA5000ES|Sony UBP-X1000ES|Sonos Connect + Peachtree Audio DAC•iT|Panamax M-5100PM
stereo Sonus faber Toy tower|REL S/5|Teac UD-501|Sony TA-A1ES|Sony SCD-777ES|Sony ST-SA50ES|Sony 43" X800D|Sony UBP-X800|Sonos Connect|Furman Elite-15 PFi