In no particular order

1) Capacitors get such a bad press on the web   Please don't believe all you read.  A measured approach is required to successfully and efficiently fault-find, not an invasive and blanket replacement of innocent and often carefully specified components.  Discuss.

2) Not all AI contains wisdom.  Really.  'Results' may well be incorrect or simply draw from online miscellany, cloaking the result with an elementary grasp of sentence construction.  Discuss.

3) Small businesses - distrust VOIP phone provider doubletalk.  Seriously.  I may have a great deal more to say about this so please watch this space...

4) Expertise and professional diligence is not related to product category.  Not here, anyway.  Budget products receive the same level of professional care and attention as high end; both ends of the spectrum are worked on equally.  Discuss.

5) In 99% of cases there is no such thing as an 'easy fix'.  Particularly with older products.  More probable is that such pronouncements underly a wishful approach which misses the truth.  Discuss.

6) All AV products that were designed with repair in mind are within the scope of a qualified professional electronics Engineer.  This is because electronic repair work should primarily be based on technical understanding and appreciaton of the theory of operation of the product on the bench, whether it is a Nakamichi Dragon cassette deck, a Dansette record player or a 1950's 405-line TV set.  Yes, experience is useful too, but this alone can result in a limited range of offered services and may still fall short if the fault symptom turns out to be complex.