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jonatanrullman

SD card suddenly won't read, but it does write

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Hi,

I just got a really, really weird issue on my UM2 extended.

Out of the blue it stopped reading sd cards, I literally did a print 20 minutes before. It freezes on reading and only after a minute or so does it go to no card detected if you don't have a card inserted. Same with the card from my other UM2.

Now, I would have been the first to say that the sd card slot has broken. Except there are a few oddities.

I tried exporting all my material settings and it worked perfectly. I can open the file on my computer and see a couple of my adjustments.

I tried a factory reset and after going through the guide it says to insert a card. Immediately when I did that it went into reading. So it seems like the detection pin is working just fine.

My other UM2 reads both sd cards perfectly.

I might add that i run tinkergnome 12.08.2 and have done so for about 1000 print hours without any trouble at all. I'm weary of upgrading though as last time I did the extruder motor lost all power.

In another thread gr5 suggested to move the cables slightly. Any other ideas before I try that?

Cheers

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This has been resolved it appears.

My other printer developed the same problem today. And I realised that the common denominator was that I had just started using another card reader. It seems like it was quite dirty and left residue on the sd cards.

A little bit of isopropyl alcohol spray on the card and inserting it ten times solved the problem, at least for now.

Cheers

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If you have the problem after having the printer for a while it can also be that you have too many files on it. There is a threshold were the printer suddenly cannot recognize it anymore. However this does not sound like that problem yet, but you could try if it helps stabilize a bit.

 

Yes, you notice a significant slowing down after a while. I usually clear out my cards every 20 prints or so.

I this case I also formatted the card to see if that helped. Only remembered about the "new" card reader after the second printer failed as well.

Cheers

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