[N8VEM: 19964] SD-CARD socket trouble

Discussion:

RHKoolaap

10 years ago

Hi all

I don't know if this is already known, but here it is anyway

I had bigtime wierdess going on while testing different SD cards. Some
cards would work, while others didn't
after much swapping and pulled out hairs I found that a particular socket
with a certain type of card refused to work.
I'll spare you the process, but this is what is happening:
the contact of an SD card lies in a recess, with a plastic lip in front.
The contact fingers of some socket types do not always reach deep enough to
touch the SD-card contacts because they remain supported by the plastic lip
which is a fraction too high.

The solution is to scrape a little bit of plastic of the lip of the SD
card, so that it is flush with the copper contacts, and your troubles are
over.
In all clearness I do NOT mean the plastic separation between the contacts.
It is the part the socket contact touches first, before it lands on the
SD-contact itself.

I found that this problem occurs mainly with SD-microSD converters.

success, RHK

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John Coffman

10 years ago

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RHK,<br>
<br>
I have not experienced this problem with FCI or TEconn sockets, and
with cards from SanDisk, PQI, Kingston, Canon, or Pretec.  Nor with
micro-SD to SD adapters from Kingston.<br>
<br>
--John<br>
<br>
<br>
<br>
On 08/08/2015 12:17 PM, RHKoolaap wrote:
<blockquote
cite="mid:38ddfe78-4952-4b78-afef-***@googlegroups.com"
type="cite">
<div dir="ltr">Hi all
<div><br>
</div>
<div>I don't know if this is already known, but here it is
anyway</div>
<div><br>
</div>
<div>I had bigtime wierdess going on while testing different SD
cards. Some cards would work, while others didn't</div>
<div>after much swapping and pulled out hairs I found that a
particular socket with a certain type of card refused to work.</div>
<div>I'll spare you the process, but this is what is happening:</div>
<div>the contact of an SD card lies in a recess, with a plastic
lip in front. The contact fingers of some socket types do not
always reach deep enough to touch the SD-card contacts because
they remain supported by the plastic lip which is a fraction
too high.Â </div>
<div><br>
</div>
<div>The solution is to scrape a little bit of plastic of the
lip of the SD card, so that it is flush with the copper
contacts, and your troubles are over.</div>
<div>In all clearness I do NOT mean the plastic separation
between the contacts. It is the part the socket contact
touches first, before it lands on the SD-contact itself.</div>
<div><br>
</div>
<div>I found that this problem occurs mainly with SD-microSD
converters.</div>
<div><br>
</div>
<div>success, RHK</div>
<div><br>
</div>
</div>
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RHKoolaap

10 years ago

Permalink

Hi John

Well then you are a happy guy. I never had this problem either (Or so I
thought...) And I'll never have it again :-)

I'm a cheap bastard... My stuff usually comes from ebay,
However an original samsung (EVO) adapter (not ebay) also gave me trouble,
while a standard size (cheap) SD card didn't (in the same socket)
It is worth checking when things go wierd. one small casting defect is all
it takes. A simple pocket knife solves it.

...