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Memory Card Resilience
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Jan 16, 2023 15:30:08   #
DICK32
 
Scruples wrote:
Yep! Old age is a b’t¥€h. Just to let you know, when you don’t put fresh batteries in your calculator, you start to forget stuff.


Scruples: How do you put fresh batteries in your brain--getting old is a b----?

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Jan 16, 2023 15:45:07   #
home brewer Loc: Fort Wayne, Indiana
 
I ran my passport though the laundry and it looked a worse for wear; but still worked at at the airport and entering countries. Some times people would ask what happened.

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Jan 16, 2023 16:25:15   #
dennis2146 Loc: Eastern Idaho
 
bikinkawboy wrote:
Your lucky she doesn’t have an old Maytag wringer washer. I suspect it wouldn’t have made it after its pass through the wringer rollers.


I am not so sure about that. When I was a teenager my right arm made it through. The wringer we had did not have an auto stop so yelling to my mother to help me out brought the wringer to a halt.

Dennis

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Jan 16, 2023 16:26:19   #
dennis2146 Loc: Eastern Idaho
 
Scruples wrote:
Yep! Old age is a b’t¥€h. Just to let you know, when you don’t put fresh batteries in your calculator, you start to forget stuff.


Then, is your memory that much better with batteries in your calculator? Asking for a friend.

Dennis

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Jan 16, 2023 16:50:21   #
JD750 Loc: SoCal
 
mr spock wrote:
Many on this site may already know this but I just found out how tough these small data cards are.
I misplaced a Lexar 64 gig card last week. Today my wife handed it to me explaining that I apparently
left it in the pocket of my jeans. It went through a complete wash/dry cycle in our laundry room and came out in perfect condition. Which is a very good thing since it contained a group of photos that hadn't yet been loaded into my PC.

Ok so you can still access the images? If they are valuable, then download them NOW. Stop reading this and do that now if you haven't yet.

You have introduced water and detergents into the card and those things are detrimental to the life of the card. It may not have failed yet, but it will fail prematurely in the future.

If it were me, I would retire the card ASAP. I would not put it back in the camera and If the images were not valuable, I would think twice before putting it in my computer for fear of transferring contaminants or particulates into the connectors of the receiving device.

Which is more expensive? The camera and computer or the memory card. Up to you if you want to take that chance.

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Jan 16, 2023 17:05:19   #
Longshadow Loc: Audubon, PA, United States
 
JD750 wrote:
Ok so you can still access the images? If they are valuable, then download them NOW. Stop reading this and do that now if you haven't yet.

You have introduced water and detergents into the card and those things are detrimental to the life of the card. It may not have failed yet, but it will fail prematurely in the future.

If it were me, I would retire the card ASAP. I would not put it back in the camera and If the images were not valuable, I would think twice before putting it in my computer for fear of transferring contaminants or particulates into the connectors of the receiving device.

Which is more expensive? The camera and computer or the memory card. Up to you if you want to take that chance.
Ok so you can still access the images? If they ar... (show quote)

I myself wouldn't worry about the card contaminating the connector in either unit to view or download. Not like it has leprosy or something.
As for the card's continued longevity, might be questionable, but I doubt it. The circuit, as well as the bonding wires, are encapsulated in an epoxy type material.

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Jan 16, 2023 17:30:13   #
Scruples Loc: Brooklyn, New York
 
Real Nikon Lover wrote:
Try buying a few CFExpress gigabyte cards at a time….


The largest size card that I buy is 64G. I don’t use larger sized cards. I am afraid if I misplace or lose a card a large number of photos could be lost.

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Jan 16, 2023 17:37:16   #
JD750 Loc: SoCal
 
Longshadow wrote:
I myself wouldn't worry about the card contaminating the connector in either unit to view or download. Not like it has leprosy or something.
As for the card's continued longevity, might be questionable, but I doubt it. The circuit, as well as the bonding wires, are encapsulated in an epoxy type material.

Funny the memory I have taken apart was not encapsulated, just chips on FR4. And they are most definitely not hermetic.

But what you do with your equipment is your choice. If you want to take that chance to save the cost of a memory card that’s up to you.

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Jan 16, 2023 17:38:40   #
JD750 Loc: SoCal
 
Scruples wrote:
The largest size card that I buy is 64G. I don’t use larger sized cards. I am afraid if I misplace or lose a card a large number of photos could be lost.

But that’s always true. That’s why I only buy one card. It’s always in the camera so it can’t get lost. 😂😂😁

In all seriousness losing them it is an issue. Particularly the micro SD. So I have a small wallet sized card holder, it has a zipper on it, that I keep them in.

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Jan 16, 2023 17:59:12   #
Longshadow Loc: Audubon, PA, United States
 
JD750 wrote:
Funny the memory I have taken apart was not encapsulated, just chips on FR4. And they are most definitely not hermetic.

But what you do with your equipment is your choice. If you want to take that chance to save the cost of a memory card that’s up to you.


No black epoxy blob over the IC?
You should have taken a picture of it so we can see what they look like inside.
I already did it for an micro SDHC adapter.

I have a 4Gb SDHC I MAY open at some point to satisfy my curiosity.
I can't imagine that the die and bonding wires are exposed.
Even cheap electronic circuits have the black blob over the IC.

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Jan 16, 2023 18:27:44   #
delder Loc: Maryland
 
mr spock wrote:
Many on this site may already know this but I just found out how tough these small data cards are.
I misplaced a Lexar 64 gig card last week. Today my wife handed it to me explaining that I apparently
left it in the pocket of my jeans. It went through a complete wash/dry cycle in our laundry room and came out in perfect condition. Which is a very good thing since it contained a group of photos that hadn't yet been loaded into my PC.

They sure hold up better than a roll of film [unless in the Aluminum Canister]!

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Jan 16, 2023 18:34:31   #
JD750 Loc: SoCal
 
Longshadow wrote:
No black epoxy blob over the IC?
You should have taken a picture of it so we can see what they look like inside.
I already did it for an micro SDHC adapter.

I have a 4Gb SDHC I MAY open at some point to satisfy my curiosity.
I can't imagine that the die and bonding wires are exposed.
Even cheap electronic circuits have the black blob over the IC.

Ok good point. I took apart a USB drive. Attached pic below.

I just now disassembled an old 4GB memory card. I have attached pics below. The memory is packaged in a plastic leadless chip carrier. It was not glued or sealed in the blue plastic outer housing. Moisture/water could easily get in around the gold leads. And then be transferred back to another device the same way.

As for the memory package itself, I would not expect that black plastic package to be hermetic or waterproof.


(Download)


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(Download)

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Jan 16, 2023 18:53:59   #
Manglesphoto Loc: 70 miles south of St.Louis
 
JD750 wrote:
Ok good point. I took apart a USB drive. Attached pic below.

I just now disassembled an old 4GB memory card. I have attached pics below. The chip is contained in a a plastic leadless chip carrier. I would not expect that package to be hermetic or waterproof.


CF card showing it all !!
I just opened an old card
AND it still works

Before Exploratory
Before Exploratory...
(Download)

Open for observation
Open for observation...
(Download)

Sealant
Sealant...
(Download)


(Download)


(Download)

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Jan 16, 2023 19:18:42   #
wetreed
 
You really shouldn’t iron the card. You could damage it.

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Jan 16, 2023 19:30:31   #
Manglesphoto Loc: 70 miles south of St.Louis
 
wetreed wrote:
You really shouldn’t iron the card. You could damage it.


To whom are you replying ?

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