I've found the best way to work on the underside of the playfield is to take it out of the game and turn it upside down .
goodolddays, do you do that for any repair on the underside of the playfield, or only for ones that prove difficult to reach?
Whilst your still learning there is nothing wrong as long as:
(a) its safe and game is always off and unplugged when working on it.
(b) always remove balls as they smash plastics if you lift the playfield
Once you get into the swing of it more, you will find its 100 x quicker with the playfield out. You can give the cab a nice tidy up and clean, but the playfield is soooo much easier to work on (both sides).
Although at first its a little daunting to remove the whole playfield, its only around 10 or so plugs to remove from CPU board / driver board etc. Just take lots a photos and label them with a texta or masking tape. Also double check before you switch the machine back on as they may have been wrong when you got it..
Here's an idea I stole from Nino years ago that I still use to this very day.
http://aussiepinball.com/index.php?topic=67.0Now the new and improved version (adapted from a fellow on Pinside)
This bad boy is the Bugatti of playfield stands.
