my whiz bang extra speky coffee machine is getting old

you may or not remember that maz gave me a second hand delonghi coffee machine that does everything except the dishes several years ago.  it's my favourite machine in the house.  it makes delish coffee but isn't easy to maintain.  fill this, empty that and do such and such are regular messages that appear on it's electronic screen.  it's been playing up of late.  the coffee instead of coming out in a nice clean 'puck' (that's coffee machine talk) and falling into the grounds container as it should has been falling in a wet mess all over the place.  i was lucky enough to find a video on youtube that was very informative and may or may not explain the problem.  it shows you how to take the whole machine apart and put it back together whilst identifying faults.  there's also separate videos of how to fix the 'brew unit' (another coffee machine phrase).  but, and here's the problem, it looks extremely complicated and i'm not sure if i feel comfortable carrying out these tasks myself.  there are tiny springs and little valves etc.  now, to get a service is rather expensive and that's not surprising considering the original price of the machine.  i am undecided whether to lash out cash for this or not.  my visitors seem to enjoy my coffee more than me.  perhaps they only like me for my excellent coffee and perhaps i should consider charging per cup.