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Another Crash Fix
Several suggestions have been made in the past to prevent the mysterious crashes in our computers; using Z80B CPU’s, 5vdc regulator cap, flexible cable to the RAM, etc. to name a few. Here’s another.
One of my units became intermittently bump sensitive. The problem turned out to be a defective socket. I located the problem by carefully probing each chip pin with a straight pin. The fix was a shortened straight pin jammed between the chip and the socket.