helpful tip
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You laugh but I'm saving this to my clip art folder for when I write instructions for my soldering classes. It's a good clear drawing of everything that can go wrong.
@futurebird@sauropods.win @gloriouscow@oldbytes.space Needs the off-by-one pin error and the magic smoke escaping to show everything.
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@gloriouscow One might think "well no one would make such a mistake, duh!" but it's actually super easy to accidentally do this. I've had it happen with mere 8-bin chips even... (Ironically I'm thinking of socketed OPAMPs here as I don't have so much experience with PCs where you could actually swap chips out, but in other words it's still a thing.)
The worst thing was I had one that bent enough that when I tried to bend it back with pliers it broke off.
@nazokiyoubinbou we've all done it. maybe not three simultaneously - the internally bent pin is particularly nefarious because its hard to see.
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@gloriouscow you're telling me i've been doing it wrong zhis whole time??
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@futurebird@sauropods.win @gloriouscow@oldbytes.space Needs the off-by-one pin error and the magic smoke escaping to show everything.
Or have the whole thing in backwards...
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@gloriouscow reminds me of piggybacking ROM/DRAM chips
(you have to have separate CAS/RAS and CS pins, most other are connected 1:1 so its often easier to just lift the few and solder the rest one on another)
@gorplop It's the lazy way to replace a bad DRAM, i've done it
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Or have the whole thing in backwards...
@futurebird@sauropods.win @gloriouscow@oldbytes.space My usual trick is to carefully pay attention to the notch/dot to ensure that doesn't happen, oblivious to Past Me having failed to be as rigorous when installing the socket.
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@nazokiyoubinbou we've all done it. maybe not three simultaneously - the internally bent pin is particularly nefarious because its hard to see.
@gloriouscow Oof, you're not kidding. I missed it even in the illustration here clearly showing it...
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@gloriouscow perhaps spin it 180 degrees.
it is a scan from a manual
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@gloriouscow [chuckles]
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Oh its ok, that's why there's so many pins.
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@gloriouscow I felt physical pain seeing this.
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@gloriouscow I felt physical pain seeing this.
you're welcome
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@gloriouscow I just know these things demand a blood sacrifice. Poking your finger, ideally under the finger nails or something.
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@gloriouscow the pin that is fourth from the right, bent outwards: the socket does not have a hole for that pin
the chip installation was doomed to be incorrect -
@gloriouscow that hurts to look at
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@gloriouscow depends, if you want to alter the functionality of the chip this might be correct.
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@gloriouscow@oldbytes.space Please CW your gore posts.
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@gloriouscow so thats why my stuff won't work
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@gloriouscow reminds me of the WOM (write-only memory) data sheet chart of “NUMBER OF INSERTIONS” versus “NUMBER OF INTACT PINS REMAINING”
