This reminds me of when I was working with a PDP-8 back in 1975. We had a hardware failure, I ran a diagnostic which confirmed the problem was in the hardware. I called DEC (we had a maintenance contract), and they sent out an engineer. He looked at the output of the diagnostic, then he pulled out a circuit board and he proceeded to unsolder a transister and solder in a new transister!
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This reminds me of when I was working with a PDP-8 back in 1975. We had a hardware failure, I ran a diagnostic which confirmed the problem was in the hardware. I called DEC (we had a maintenance contract), and they sent out an engineer. He looked at the output of the diagnostic, then he pulled out a circuit board and he proceeded to unsolder a transister and solder in a new transister!