Two questions in that one: First: if an obvious problem has arisen, I will assume you are NOT asking about that one. BUT, if you are, i would find the problem if eeasily findable right then. If it is a complex problem i would wait til the next day. If it was a component, i would probably toss it. (I hate broken stuff, and will usually NOT pay to fix it, if i cannot fix it myself.)
Second: DISSATISFACTION with some component of the sound quality.
This second question is the driving force behind all Audiophilia.
And I would Do NONE OF THE ABOVE. in your questionaire.
I know my system will never be perfect. So I do not worry about it.
I also: KNOW WHAT " I " WANT MOST from my system: clarity is #1, treble purity is #2 skip 3,4,5 then third need way down, low level detail, and tone.
You can see bass is NOT on my needs list. nor is warmth, though leaness is to be avoided.
When I want to play around with some tweak or other, I do. When I don't, I don't... (How Zen like of me)
When I am actively changing equipment and engaged in critical listening, I just listen, and think of what is the area I can change or tweak to alter that characteristic.
I have found I trust my own instincts (46 years of stereo putzing) far more than a post from another person.
I do not ask anyone. I may 'blog' about the issue, just to say something about an issue that bothers me.
i still would like a bit more clarity.....
My analog does, my digital is a bit short on it. The compensation to rid me of other problems is adding a bit of a veil over the digital, as a neccessity to get rid of the digital tizzyness.