@Steve Carr to the rescue again! lol I've been putting the latest replacement H up to make sure it is good to go and hadn't flown my H pro w/ST16+ for a while so I thought I'd check out the controller. J1 was slow. Did the "canned air and stir" a few times and she's back to quick! Thanks Steve!The air flow is for cooling and it is definitely needed. Some of the components get quite warm. It seems, for the most part, the sticks are the most common problem and I think it's mainly oxidation. ST16's that are used regularly have fewer problems than those which sit on the shelf for long periods of time. That also would explain why new sticks often need cleaned since they may have been sitting in a warehouse for a long time.
It's always a good practice to "stir" the sticks before flying and to also check them in hardware monitor.
There are a couple of rubber tabs on the back of the ST16 that you can remove to use some canned air to clean the contacts. It is not a one off procedure. Spray and stir the sticks repeatedly. I had the same problem with one of my controllers and did both the top and bottom numerous times and it resolved the problem without having to disassemble anything.Yes, after spraying the base of the joystick it works fine for a few minutes then it becomes sluggish again.
thanks I took the back off without too much problem and gave the pots a good spray and worked the joystick vigorously. That has solved the problem for now, everything is looking good because i have a commercial drone job tomorrow. LeMay