The only solution is to buy a second, identical, printer and leave one switched on. Then after a reasonable amount of time - say a year - you will be able to assess the relative conditions of the two printers and be able to make an informed decision as to what to do in future.
The only solution is to buy a second, identical, printer and leave one switched on. Then after a reasonable amount of time - say a year - you will be able to assess the relative conditions of the two printers and be able to make an informed decision as to what to do in future.