Is my D70 dying? (CHA error, 66MB JTG & JPG files!?!?)

I was shooting a race today and took over 1400 photos. About 30mins into the

event, I got the dreaded "CHA" error and it told me the card wasn't formatted.

Usually, I can turn it off/on and get it to come back. This time, I had to pull

the card and re-insert it to get the camera back.

 

The original folder, which had 80 photos or so, has a bunch of odd stuff in

there. Here's what I'm seeing on the card. it had 280 files in this folder

altogether

 

* It has a 51 66MB files on it!!! A few are ".JTG" files some are JPGS. I

cannot copy any of them off the card. They are unreadable junk

 

* Instead of the normal "DSC_0001" files, a bunch of the jpg and jtg files are

"DSC[0002" I've never seen the bracket before. About 80 of them are like this

 

* many of the files have crazy names: "DWC_1<14.JTG" and "DWC_1<0=.JTG" are some

of the names I see.

 

After I pulled the card, it began saving files into a new folder. The other

1500 photos I took from that point on were fine, but 140 of the 280 files in

this directory are corrupted. Could have been a disaster, if this was a wedding...

 

Has anyone seen something like this? The card is a 1 month old 2GB sandisk x3.

 

And did i mention: what the heck is a JTG file?!?!

Could be the card.

 

BTW, if you shoot professionally you should have back-up camera and memory; otherwise you are inviting inevitable disaster.

When I've had a CHA error in the past it has always been the card. I would buy a couple of 1 gig cards. Send the 2 gig back to Sandisk for warranty replacement.

Anthony - I do have backups. I carry plenty. I had a similar issue with a Lexar card, which is why the SanDisk is new. When I got the error on my new card, that's when I figured it was the camera and not the card.

 

Lexar told me to reformat the card, and its been working fine since. I was just shocked to see 66MB files on the card and have so many corruptions...

Card, no doubt. I work the piss out of our SanDisk Extreme's and have never had an issue, but any mfr. can make a lemon. Good luck.

It's a good idea to format your card in your camera every time you remove a set of images from it. Don't just delete the images - format the card. Like any other file storage device, deleting images does not always delete everything on a card and it can leave fragments of files. If you ever have to do a file recovery, the chances of success are better with a card that is routinely formatted.

 

Joe

well i had a problem with my friend's canon. His card will write corrupted files. So we got some caned air and blew the contacts from the camera and the card. Then he bought some place a pin cleaner for Flash cards and ever since he had no trouble. Some times conectors even though they are made out of gold to prevent corrosion and have a good electrical connection fail due to the fact that instead of using the USB cable to download the files from the camera to the computer we use the card itself welcoming dust and dirt. That will later on create a false in the electrical conectors causing nothing but trouble. Clean them, i will suggest that first.

thanks - does anyone have any idea what a JTG file is? And why was it 66MB?

keith,its the card,i had the same problem,your card could work but is not full compatible,of course you can take picture but after a while,start to get (free game)so i check in the instruction book for the card if its compatible or not and was not.Better get the card they suggest in your book.If the card you want is not in the book,ask the question to nikon and they gone a tell you if you can use it or not.I have one card extreme 4,its new,not in the book,nikon said i can use it its full compatible,works great.

Hi i got same problm jtg DWC_1<5070.JTG" files with SANDISH EXTREME 1GB CARD

WITH D70S. ANY ONE CAN HELP ME ?

mann4u4m@hotmail.com

Had the same thing happen on Christmas Eve and was rather panicked (which is how I found this forum). Eventually, I tracked down "CardRecovery" software ($40 from cardrecovery.com), which did indeed recover all the 'lost' photos.

 

Nope, not a shill; just a relieved user. You can see some of my photography at http://and-still-i-persist.com/wallpaper. ..bruce..

I used GetDataBack for FAT to recover files, paid version, recovered most of my files.

 

(Nikon D70, latest firmware, by the way, and still had corruption)

We just had the exact same issue, and my wife came up with a simple solution. The Sandisk card in our D70s had the JTG files, the unreadable JPG files with the square bracket in the filename, and the oddly-named DWCxxxx files: the whole menagerie, as described above. After backing up the readable files, she ran <i>chkdsk</i> on the card/drive. The corrupted files were recovered as CHK files. After renaming them to JPG extensions, they were all readable again.