Having problems with your Canon EOS 400D / Rebel XTi Digital Camera ?

I have 400D/XTi Rebel that won't always turn on.

\015 I have both 1 350D and a 400D, the 400D sometimes won't turn on or flash the card reader light on closing the door. \015\012\015\012I have 3 batteries in which all work perfectly and give long life in the 350D.\015\012\015\012The 400D also tend to discharge the 3V Cr2016 date/time battery very rapidly (about 6 weeks) \015\012\015\012I can recover it sometimes by removing all batteries and leaving it for a week. Then restart it with fully charged ones. After this it will accept any battery and work. This method is not 100% and may be voodoo.\015\012\015\012Any ideas?\015

Answers :

Try a firmware upgrade ?
Repair Help & Product Troubleshooting for Canon EOS 400D / Rebel XTi Digital Camera

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