My video engineer detested a recent repair failing or returning for a different fault, not that it happened very often as he was very thorough, he would put a note on all of the repair documents of older machines. A typical example would be "N.B slight wear to video heads ". As machines got older the list would increase or sometimes it would just state "N.B other wear". Another little trick was to repair the second fault be it the same symptoms as the original or not, soak test the machine and then release it as "No fault found". Often when making out the repair invoice these comments would be removed or amended as the shop staff often went through the repair invoice with the customer and said to me "how can we give someone a bill for an extensive overhaul and then state the machine is worn? Some of these "N.B s" read like a sermon ! "
Then someone bought him a mug with "NB wear" on it...
Rich