The same happened like before. As soon as I conencted it to the PSU it only took 100mA and now I again have the 170Ohm short…
It’s messing with you 
You can try removing it using the same methods as above, just to see if it is indeed the SoC (or balls below) at fault… though I’d be gutted if it wasn’t the SoC at fault and the short remained after pulling it
Reballing the SoC isn’t that bad, I’ve even done it without a jig and a universal direct heat stencil, you just have to make sure your using the pre-formed balls rather than the paste, as it’s too big for the paste
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Ok. as a last step I will remove it 
and I will have officially a donor board
Ok, fingers crossed
Just make sure the main die of the IC is clean if your using one of those suction tools to lift when it’s up to reflow, give it a nudge prior to make sure
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Aaaaaaaaaaaaaaaannnnnnnnnnnndddddd my short is gone. Sh*t. 2,5 days of my life…
I have a few houndreds of kOhm on the rail
Was ir a clean lift? any evidence of solder bridges if so?
It came off super easily. Tapped it and pulled it with tweezers. I can find one big solder blob on the bottom although after pulling it it is hard to tell what was before.
Hmm you could clean up the pads on the SoC by running over it with your soldering iron, then after checking the corresponding pad which is on 3V3PDR relative to ground and seeing if the reading is still low with the SoC out of circuit, if it’s not, it’s possible the IC will be fine following a reball, and we can put it down to impact damge and a loose ball or liquid/corrosion (not that i see any)
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I will do this tomorrow. My wife is killing me already I have spent more time “with you” at the weekend than wit her I will let you know tomorrow evening after work what I could figure out.
Many many thanks for your kind support I have learned a lot from you. Please let me know if I can thank this for you.
ahhaha 
completely understand, no worries.
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I have some news for you. Bad news… I have a 6Ohm short on teh CPU on this pad…
Ah well, you get them from time to time
… i mean this proabably won’t work or you’ll likely lose some key functionality of the SoC, but you could reball it and try knocking off the corresponding balls pad (there maybe more than one) which represents the short. Might make for a good tester board if it partially works or at the very least good reball practice 
I was thinking on teh same that basically it was working without this line before. What if I try to kill this input with high current? Maybe it is just for some monitoring or I do not know.
Hmm might be worth a try. I saw this techique on iPad Rehab but have never tried it myself… i probably wouldn’t go above 3.8V in case it damages lines elswhere.
One key detail iPad Rehab missed, when she did it and successfully cleared the short, the line in question either no longer had a reference to + voltage or possibly ground (one or the other) had she of provided this in the form of a resistor externally after the fact her repair had a better chance of working
Interesting approach.
I have 2 additional switch with similar fault. I will check if there reballing would help or not. One of them I could reheal after a reflow but there also I had an extreme current draw.
Maybe game over for that one… would guess not enough heat in your tip and wick stuck cold.
Sometimes you get lucky and the pulled pad is a common rail or ground and you can get away without it, but i think in this case that SoC is missing to many
Somtimes you can scratch back the mask and there is a ring round the edge, you can sometimes get a ball to take to this, sometimes not
Yes, for this one I used stupid technick while pulling off the board. It is my fault…
The only one which I will try to repair is the one I messed with this weekend. I try to kill that line and lets see. I already ordered a stencil and jig for switch.
I have just received the 16 different iphone stencil kit each with ca 20 different pinouts but non of them seems to fit to the Wifi chip. Especially because it is using the strange pinout with some gaps inbetween.
Several of my stencils match the pitch and pad size but i can’t remember if it was the “android, samsung” stencil set, if it’s marked i’ll let you know which one is a match, you can get the specific stencil for this IC, but it’s so small using a universal is pretty easy, if the stencil has more holes than needed, just cover the excess with kapton, using it kinda like a masking tape, areas where there are no pads on the IC itself then the balls can be scrubbed off with a brush after reflow.
You might find the current isn’t high enough to clear it, in which case you might have to resort back to knocking the relevant ball/s off afterwards.
Many many thanks again for all your help. I will order some more android stencils also. They are cheap so…
Regarding this shorted one you might be right I will just knock off the relevant balls after reflow.