How do you tell Biology from Chemistry from Physics?
It it wiggles it’s Biology, if it smells it’s Chemistry and if it doesn’t work it’s Physics.
I don’t know of any teacher-training course which spends time training teachers on the finer points of being a technician. Yet when equipment does break down you’re expected to somehow just ‘know’ what to look for – and how to fix it.
So what do you do when something breaks down?
One option which many are not aware of is to ring up your supplier of school science equipment and ask them if they can fix it. Many of them do have repair departments and should be able to give you a quote which you can then compare to the price of a replacement.
Another option is to ask a senior class if anybody there wants to have a look at it. Usually you will find somebody there who has more free time than you do (but obviously don’t allow them play with anything that could have health and safety implications).