NoViS1
Posts: 3
Joined: Sun Aug 31, 2014 8:27 pm

Raspberry Pi Zero W - Working with missing part on motherboard

Sun Apr 01, 2018 3:45 am

Just got a Raspberry Pi Zero W and was soldering on the header pins. My solder skills are pretty poor and I accidentally got some solder on a ?capacitor? between the header pins and the CPU. There are two of these capacitors right about what I think are pins 16(GPIO22) and 17(3.3V) [assuming I don't have the pin-out reversed.]

Anyways, I was troubleshoot why I couldn't get the ZeroW to boot at all and when I was trying to remove the solder on top of the ?capacitor? I accidentally sheered it off the motherboard! Much to my surprise I can now boot again. Oddly it seems like the text login output to the HDMI for tty1 stops right where it should display a login prompt, but slogin/wifi is working just fine and I'm not seeing any red flags in dmesg or /var/log/messages.

So I have a working ZeroW with a missing part. Is there anyway to know what function(s) that part might be involved in so I can avoid them and keep my system stable? Is there perhaps a stress test of different functions so I can see what is now missing?

Thanks for any help, please forgive my amateurishness, but that the whole reason I'm playing with a $10 board!
Robert

hippy
Posts: 7911
Joined: Fri Sep 09, 2011 10:34 pm
Location: UK

Re: Raspberry Pi Zero W - Working with missing part on motherboard

Sun Apr 01, 2018 1:41 pm

NoViS1 wrote:
Sun Apr 01, 2018 3:45 am
So I have a working ZeroW with a missing part.
Find an online image which shows the Pi board. If you annotate that with an arrow as to exactly what component you have lost and post it, that may help to identify what it is and what effect it has.

Full circuit diagrams for the Pi Zero W are unfortunately not available but people may be able to make an educated guess as to what it is and what its loss may affect.

NoViS1
Posts: 3
Joined: Sun Aug 31, 2014 8:27 pm

Re: Raspberry Pi Zero W - Working with missing part on motherboard

Sun Apr 01, 2018 7:56 pm

Hippy,

I attached an image with an arrow and the sheered part circled. Might be a moot point though, system was failing to complete slogin after 10 hours and after 12 hours appears to be non-responsive. Probably going to have to trash it and try again...

Robert
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PI-Zero-W.png
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