How come maunfacturers parts have to be replaced at such convenient intervals. Do they make things to last exactly 6 months or do they do risk assessments and it so hapens that things seem to fail after 6 months.
Do electrical appliances have special insulation in them that breaks down if it is not tested every year?
I might be cynical in suspecting manufacturers instruction writers just make up convenient time intervals and it is not done by a rigorous method of testing, evaluation and risk analysis.
I think I am getting in to the discussion I said I did not want to start. Sorry.
Robert
