well, it marked half the RAM as faling :-D
The hackerfarm server was marking half of its RAM as failed. Fixed it by *removing* a chip. Still dunno what it did.pic.twitter.com/M4ykmgM61u
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Oh it fucked up the vref_dq voltage alright. But what was it *supposed* to do? :D
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It provided bits to half the words in that RAM, maybe?
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Wait, not a RAM chip :|
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How in the nine hells did you manage to track down the problem to that chip? I am seriously impressed
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vref_dq was out of spec, so I traced it to the opamp chip (the one above). It was configured as a 1:1 buffer. Its input was a voltage divider, but the voltage was wrong. Divider resistors were fine, only other chip connected to the problem node was that one. Had to be it.
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