Pinball machine (Williams Road Kings) ID:129

The pinball machine, showing its location to the left of the large laser cutter. The laser cutter's honeycombs and a laser-cut skull are visible in the background.
Type	Pinball machine
Make/Model	Williams Road Kings
Serial number	??
Original owner	Frollard
Loan status	Long-term loan
Arrival date	2012 or earlier
Location	Next to the large laser cutter
Functional status	Working with a few things broken as of 2019-01-27
Usage permissions	Open to All
Certification	Self-taught
Wiki-ID	129
Label	1.0" 1.5" 2.0"

Documents

Manual is available as a PDF online and on paper inside the machine.

If pressing start button results in soft sound repeated three times "dugga dugga dugga" the machine can not find both balls. One may be stuck/hiding in the playing area or the limit switches that detect the balls near the launcher may be dirty or damaged. It could also be one of the fuses.
Powers on but won't feed balls? Check fuses in top cabinet. Front 'glass' lifts up and out, panel swings to the left exposing electrics.
Sound volume control pot/knob is on the inside, left wall, about 12" in from the front door.
TILT: The tilt switch is a metal rod hanging inside a round hole in a piece of sheetmetal on the left side wall just inside the door. It may be jammed to one side by the manuals or other contents of the machine.

Diagnose fuse blowing problem
- Likely culprit: bad solenoid on jet bumper (already disassembled - discoloured)
Replace left flipper solenoid
- This is the cause of the left flipper sticking on the down-stroke, and the repeated blowing of at least one fuse.
- Order new solenoid
Replace all rubber bumpers
- Order new bumpers
Realign flippers
- They keep getting out of alignment no matter how much they are tightened. Maybe threadlocker would help?
Descale copper contacts
- Better current flow = better power from flippers
- Ian did one in Feb 2016.
- Consider replacing with a different type of switches
[Optional] Replace lights with LED equivalents/rewire motherboard to work with LEDs
- Rutger wants to do this pretty much immediately (as of Feb 2016).
- Frollard is not so optimistic, because the existing matrix depends on the incandescent bulbs' resistance, making LED replacement complicated and likely not at all power-saving.
Resolder top front speaker wires
- Only internal speaker works; top disconnected
Find replacement coin rejector
- Player 2 quarter slot rejector missing