I may end up eventually doing that, but apparently it bothers you that I'd like to learn something about the workings of the unit and be somewhat informed and would also like to see if I get lucky and solve the problem with the replacement of a relatively inexpensive part or two.
Of course another issue is, in the Yellow Pages, they don't make a clear distinction between "Honest, fairly priced genuinely competent tech" and "bungling, meth-addict ripoff artist".