Thanks for your to all of you for your morale support
... if you go with the full artwork kit from ThisOldgame, it's not exactly cheap.
I won't need these stencils, because the artworks are good enough for me. Only few 'paint' adjustments here and there... and it will be OK I would say.
May I give one suggestion ? Move the SI to the Red/Orange gameroom. Now, the blue of the cab makes it blend into the blue background too much, where the orange/red color would be an awesome contrast. Just a minor detail of course. Following this for sure ! Good luck and may the fo.....oh wait that's another space game 
Games are going from/to blue <> red room <> house (
REDRUM ... which movie?
) every weeks
But at the end, yes, the SI will looks better in the
Redrum 
Back to work.
In order to remove the front bezel, just move this
...into this position :
The front bezel is also ... the marquee
See the lamps
Now let's remove the monitor's bezel...
...attached with few staples...
...to carefully remove like this :
It's just a simple piece of heavy paper, or I would say a piece of light paperboard...
OK, now let's remove the monitor... first the chassis/electronics... only two screws...
Since I got my tools box from USA, I'm an happy man... I'm not afraid anymore about screw size like '7/16'
For information, all the screws on that cabinet seems to be US size... so all the Space Invaders for Europe have been build in USA?
OK... here's the monitor electronics parts :
I can now remove the tube
I carefully remove these two transparent colored sheets... because I'll use them on an other monitor.
I also remove the complete harness :
Under the power supply... French coins...
...and as you can see, a TON of dust from various era
The black square is 'almost' clean... the rest is dust
