It depends on what the problem is, but often the answer is Yes.
The first thing to try after vacuuming out the dust is a small squirt of Servisol 10 Contact Cleaner, this is the electronic equivalent of a magic potion or the elixir of life. Then some gentle exercise of the pot cures the problem in most cases.
If you find you’ve used too much, wipe off the surplus with a tissue and a quick squirt of isopropyl alcohol will clean up the rest.
The Servisol removes tarnish and leaves a thin lubricating film to protect against future tarnish. It does not seem to have changed in the five decades I’ve been using it.
Late last year I fixed an expensive analogue mixer desk that had been in storage for twenty years and was unusable because half the switches had stuck and several pots and faders were crackly. After the Servisol blessing only two parts needed replacement, and that was only because of mechanical damage.
In the past I’ve tried several other products from well known brands claiming to be “contact cleaners” but they never came close.