Defender Repair Logs

Massive Williams Defender Repair Log

Note: The images are now broken on the above link, so I have a PDF version stored here for future references

Trying to burn decoder EPROM replacements

Using 4164 RAM

http://www.robotron-2084.co.uk/techwilliams4164.html

Williams Decoder ROM replacements

http://arcadecontrols.com/BBBB/decoder.html

The Ranger Chronicles (Williams Game Board Repairs)

Stef van Dijk’s repair logs for Robotron, Joust and other Williams boards

Aussie Arcade’s Great Defender Repair Log

GameDude’s repair log of a troublesome Defender which I have also stored here in PDF form just in case it ever disappears!