Wanted to throw in that I’ve also run into this issue with my Hauppauge WinTV-quadHD tuner where the v1.20.2.3402 update dropped my tuners like I never had them setup. Attempts to add the tuner result in a spinning loading wheel. I’ve let it spin for 30+ minutes with no changes.
I tried reverting back to v1.20.2.3343. with no luck. I didn’t think I needed to go so far back in terms of versions, but I ran across this thread and tried v1.19.5.3112, but from looking at the logs, I’m still experiencing the same issues.
I ended up trying the suggestion by @John_Pittman to try removing the tuner entries in the DB (I’m a web developer, so I’m fairly comfortable with SQL). Removed all 4 entries for my tuner in the Plex DB, restarted PMS and it recognized them immediately.
Here’s my ticket from over a week ago: 1.20.2.3402 update wiped out my TV Tuners and now unable to find them - #3 by jddean123