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Saturday 13 January 2018 at 08:06
Most of the time, the MPUs of this era that get put up for sale are the ones that were attacked by battery damage, and owners replaced them with a better one or an after-market one.
Since there are after-market boards available, it isn't really worthwhile to stockpile battery damaged boards unless y...
Source: http://pinside.com/pinball/forum/topic/old-mpu-boards#post-4173784