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Automatic short circuit detection jig

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OM222O:
Hey guys

I'm hand soldering 100 PCBs (all SMD parts) and they're quite complex (more than 50 parts). The problem I have is that often there are some shorts between a few pins of very fine pitch ICs as the combination of the stencil I have and the solder paste I use applies a bit too much paste.This requires a lot of probing to find the short and fix it (usually about 30mins or so from start to finish). I wanted to add some test pads to nets which are likely to be shorted around the board so I can use another PCB which has some pogo pins to find the shorts. I'm not sure what is the best circuit to use in order to identify the shorts between nets. one circuit which I through of was a 100uA current source (REF200) which is switched by a switch IC between nets and trying to look for that current on other nets using a 47k resistor and measuring the voltage on top of it (4.7 volts at 100uA) but I feel like I'm over complicating this already  :-DD is there a simple way you can think of to probe the nets vs each other?

Also if you know of small pogo pins (preferably THT but smd would be fine as well) please put a link to them down below. thanks.

Pack34:
For something like that, I would either have an assembly house take care of it since you're doing 100 units.

Otherwise, Adafruit has a tutorial for a pogo-pin style test setup. I would bring the power rails down and use a couple switches to test for continuity.

kony:
If rework of TQFP/SSOP is taking you more than 30s per botched board, you are doing something very, very wrong. Drown it in flux, dragsolder it, wick the excess, done.

OM222O:
I have already bought the PCBs (no fiducials ) and parts (not on a reel) which was a very stupid mistake but one that I can't undo ...

Also it's not the de soldering itself that takes long ... it's the detecting the shorts which is painful ... I had a few units where I had to take 2 to 3 chips out to find a short because it was literally under the IC and not visible. the nets are also complex so I can't easily tell which pin might be shorting to somewhere else. that's exactly why I'm trying to build a jig at the first place  :-DD I think I found an easier way though: I can use a micro and pull one of the nets high, then check the rest of the pins to see if they are also high, which means they are shorted. that way it'll be a lot faster and doesn't need fumbling around ... I'll watch the Adafruit video to see how they did it, thanks.

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