Quick little teardown and bodge-fix: my scratchy-sounding SD card adapter had a wonky contact pin. I cracked it open, tried to bend it back, promptly snapped it, then lost the bit. So I chopped a resistor leg, soldered it in under the microscope, tweaked the pins for continuity, and slapped it back together. Plugged it ināholy crap, it worked! Not the prettiest fix, and I probably wonāt trust it long-term, but that was fun.
So probably quite a quick video.
I have an absolute ton of these SD card adapters.
I use them quite a lot.
This one seems to have gone a bit wonky and I donāt know if you can hear this.
It sounds a bit unhealthy and it certainly doesnāt work.
So I was wondering can we crack this open?
See whatās gone wrong?
Is it even repairable?
Letās try and open it up and see how it ticks.
So thereās certainly no visible screws and I think itās probably glued together.
We can actually see down the end.
So letās see if I can make those visible.
You can see what looks like some spring connectors in there.
Letās look at one thatās not making a funny noise.
See if we can see anything different.
Between this one and one that is actually working.
Okay so this one definitely works, works quite well.
So letās see what the sound difference is.
Yeah it definitely sounds less scratchy and horrible.
Letās look down the end and see if thereās anything obviously different.
So letās see if I can angle this light.
So looking down there I can see some pins at the end.
Looking down here it looks to me like somethingās gone out of place.
One of these pins looks slightly wonky to me.
Yeah so on this one it looks like a bunch of pins are at the end.
And this one looks like thereās a horizontal pin, somethingās got bent.
Letās crack it open.
Must remember not to confuse my working one with the non-working one.
So this is the non-working one.
Is it easy to snap open?
Well getting somewhere itās definitely glued.
So this is going to be, oh there we go, well that suddenly snapped open.
Well hopefully you can see the same problem I can see.
And I wonder can we bend that pin back into place?
Whereās my pliers and my tweezers?
Everythingās vanished on the desk, someoneās tidied up.
One moment.
Okay so in theory it should just be a case of putting this back into place.
And how does it work?
So it looks like theyāre kind of bent around.
Yeah, I mean, oops, oh dear.
Well thatās probably no longer fixable so weāve lost a bit of this pin.
Yeah so it looks like what normally happens,
actually letās put a card in because you can see exactly what happens with these things.
So the card slides in and you can see
that these little bottom things on these wires connect to the pads on the card.
And obviously this one, itās not going to work anymore is it?
Because weāve lost the bottom bit of the connector.
Now I donāt think itās possible to reattach that.
Should go something like there.
I wonder, maybe you could do a bit of solder to reconnect it?
Well letās take this card out, letās have a look.
Should go exactly there.
I know, letās get this under the microscope and I reckon with a little blob of solder
we might be able to fix it.
Itās unlikely but letās give it a go.
Right, so hereās the repair weāre going to try and do.
So we have this bit of metal here, this is surprisingly awkward.
So that little bit of metal that I had needs to be reattached to this bit of metal here.
So in theory what we should be able to do is take this bit of metal,
stick it back here, put a blob of solder on it, and oh jeez, whereās it gone?
Iāve lost it, oh no, found it again.
Right, before we lose anything Iām going to stick everything down and letās give this a go.
Now Iāve just realised that normally I hold my soldering iron in my right hand
and tweezers in my left.
So Iāve got this completely the wrong way round.
Letās turn it around and then hopefully my right.
Hang on, do I hold my soldering iron in my left hand?
Tweezers, yeah, I need to turn this round.
Sorry, Iām just forgetting left from right there, letās put this back on
and Iāll then find the right place.
Okay, thereās our broken part.
Right, so letās first put some very fine solder
and weāll try and put some solder on the end of this pin.
So possibly thatās not the finest solder.
Letās try that again.
Letās get some fine solder, which we have here, very fine.
Got my soldering iron and letās try
put some solder on the end here.
Itāll melt, damn you.
Okay, well oops, yeah, so weāve got some solder on the end.
Now then, so I want to stick this to that.
Oh shoot.
Well, unfortunately, weāve lost that for good.
Itās gone to the great component heaven on the floor.
So Iām going to bodge it.
So Iāve chopped off the end of a resistor
and Iām going to try and solder it to this little bit of wire here.
I donāt know if Iām anywhere near it.
Oh, there we go, that is actually soldered on.
Amazing.
Now, in theory, if Iāve got my directions correct and itās bent in the right place,
then this bit of wire might make contact with the SD card.
Letās stick one in and see what happens.
So SD card coming in now.
Right, is it actually making contact?
No, so we need to bend the wire.
So I need another pair of tweezers.
One second.
Okay, so Iāll come in here.
Iām going to hold up.
Letās see if I can do this.
We will hold up this, I can get my tweezers in.
Okay, and then I will come in and try and bend this down.
I think weāre getting there.
I just need to bend this.
Right, I think thatās actually making contact.
So if we take the SD card out and then we put it back in.
Now, how are we going to test this?
Yeah, I think we might actually be good.
So I think there Iām just touching the copper and not the actual pin.
And then come in here, weāve got continuity.
Letās check we havenāt actually shorted these pins together.
So itās that one.
No short.
All right, letās stick it back together and Iām going to plug this into the computer
and weāll see if it actually works.
So itās back together.
I mean it doesnāt actually stay together.
The glue is obviously now broken and any of the pillars are gone.
But I do have an SD card inserted.
Letās go on the computer, see if it works.
Weāre going in, plugged in, holy crap it actually worked.
Weāve got our SD card working.
So I did a bit more under the microscope just to bend the pins around and re-solder them.
But weāve actually got it working.
So in theory I should be able to erase this disc.
It seems to be completely empty.
So letās just try formatting it as fat.
Letās see if it works.
Well so far so good.
Oh operation failed.
Actually Iāve seen this before.
Letās just erase it again.
But weāll do it as Macos journaled.
No come on work.
Okay letās try an SD card that I know definitely works.
Okay oh itās working.
SD card.
Final Cut Pro just jumped up saying youāve just inserted an SD card.
Let me import some stuff.
There we go.
SD card.
Hereās all the stuff on it.
Well I mean itās not the nicest repair but it actually works.
I am amazed.
There we go.
Well that was interesting.
Iām not sure Iāll use this adapter.
I think I will stick to the shop bought one that hasnāt been hacked around by me.
But there you go.
That was kind of fun.