well human factor,
i detect a certain amount of irony from your post and you nick....
i'm not sure if you know that engineers are not obliged to perform t/s on the basis of a chat....however if it is written in the log.. they are!!
as for your test on ground satis comment... believe it or not sometimes faults are not easy to reproduce on the ground. an engineer can only perform what is written in the technical documentation (AMM, TSM) of the aircraft. if they perform a test and it is ok... well then it is ok.
my advise is that if you have a hard failure, not to try and reset the system(as airbus norm) but to leave the failure and let it be checked by the engineers. that way we can get the info we need to perform proper t/s and rectify the problem...