Stopped using 400plus - camera refuses to boot - Bricked.

[GoogleCodeExporter]

When i have the battery grip for the camera installed, and i put a battery tray 
in, i  can flip the power on switch. If there is a 400plus card in the camera, 
the blue print light activates for a quarter or so of a second and the camera 
freezes. If there is a non-400plus card in the camera, it proceeds to freeze 
without the blue light activating. Under both circumstances, if I power the 
camera off, the power led stays active. None of these conditions apply when 
there is not a battery grip. 

Timeline-

I installed the software about 2 weeks ago, used it twice. Accidentally 
formatted the card with the firmware running, turned the camera off, turned it 
back on, loaded up the normal firmware. This worked well, but my shutter speed 
adjustment stopped working in the field. Nothing fixed that except for pulling 
the batteries. It did work for the rest of the shoot. I tried to boot it with 
the same formatted card later, it gave me the problems outlined above. I may be 
scrapping the camera for parts if this cannot be fixed. My tech says it needs a 
new mainboard and power unit. 

Original issue reported on code.google.com by jsncarr...@gmail.com on 20 Sep 2012 at 11:31

[GoogleCodeExporter]

Sorry to hear that, but this does not seems to be related to 400plus at all...

When the camera powers on with a formatted card, or with no card at all, there 
isn't any code from 400plus in the memory that could interfere. Besides, it 
only fails with a battery grip attached; and that is a hardware-only device, 
there is no software related to it as far as I know.

Original comment by eduardo....@gmail.com on 21 Sep 2012 at 7:47

• Changed state: Started
• Added labels: Type-Support
• Removed labels: Type-Defect

[GoogleCodeExporter]

Hi, this is not 400Plus related.
IMO it's most probably a power issue... it could be the connectors between the 
grip and camera, or the connectors between the battery and the grip itself.
The problem is most probably because when the camera starts, it wants to 
initialize most of the hardware, and this is the moment when the camera eats a 
lot of POWER. If there are weak connections in the power lines, there is not 
enough power for the camera and it freezes. Clean the connectors and try again, 
if you are technical guy, try to open the grip and see if there are weak 
connections.

Original comment by fired...@gmail.com on 21 Sep 2012 at 7:55

[GoogleCodeExporter]

@ eduardo....@gmail.com - it doesnt only fail with the battery grip attached, 
it fails both ways, however without the grip and with just a battery & battery 
door, it just sits there and nothing lights up and nothing does anything

@fired...@gmail.com - I'm ordering a new dcdc today because i think this is the 
issue. if not, i need a new mainboard in which i will be parting out my xti :(

Original comment by jsncarr...@gmail.com on 21 Sep 2012 at 6:39

[GoogleCodeExporter]

btw this is kind of a testimate of canon's engineering, I bought this camera in 
august of 2006 when it was brand new and i put it through hell. the rubber has 
mostly rubbed off, you cant read some of the print on the buttons anymore, it 
only has 26,000 actuations, but the body itself has been through sheer hell. 
Rain/Sleet/Snow/Sandstorm/LSD trip/extreme heat - in fact the day i turned it 
on and it didnt turn on, was after it was stored in a 110degreeF room all day.

Original comment by jsncarr...@gmail.com on 21 Sep 2012 at 6:50

[GoogleCodeExporter]

I'll close the issue, as everybody seems to agree that this is not related to 
400plus.

Original comment by eduardo....@gmail.com on 26 Sep 2012 at 7:46

• Changed state: Invalid

[GoogleCodeExporter]

BTW share the results after replacing the DCDC, or whatever you discovered. 
Please keep in mind that we need broken cameras, just in case you decide to 
throw it away.

Original comment by fired...@gmail.com on 26 Sep 2012 at 8:04