The restoration of a 1980's Williams Defender arcade machine
Archive for December, 2014
Upgrading: Replacing the 4116 memory with 4164 memory
Dec 17th
It’s a well documented fact that the standard 4116 memory used for the Williams games such as Defender gets very hot and fails often, and also requires multiple voltages to work, which make them a hassle to maintain One common upgrade is to replace the 4116 memory (64k memory needing +5V, -5V and +12V) with…
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