So I have Grid Runner an old Maygay unit that I thought Id revive. I bought a working Epoch board and fired it up. All Eproms are located fine and definately the right way.....installed and it booted up, gave the usual alarm noise etc then all the lovely flashing lights....great I thought! The Epoch board has a battery fly lead so as not to suffer any damage and all seemed well. Coupe of crackling noises then boom nothing,,,dead. PSU seems all lit nicely just 3 x lights when fired up on the board +12V, -12V, +VLOGIC nothing else. Normally the +VDISP would be lit, security flashing etc. Any ideas....I reckon its something other than the Epoch board myself but happy to be proved wrong!
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