« on: August 17, 2014, 10:16:28 PM »
Like Mt Spokane mentioned, I think it was a CF card that must have been inserted at an angle. Mind you, the 300D was over 7 years old then and the CF slot had seen a fair amount of push and pull and so tolerances were worse...When this happened to my 300D, it was a bent CF card pin that had shorted the power bus and had blown a device. The cost of repair was not much. Check in the CF slot if you can see a bent pin...
How in heck do you bend a pin on a CF slot? There are all multiple guards in there to prevent incorrect insertion.... the only way I can think of for a pin to get bent (other than sticking something else down into the slot) is for the pin to be slightly bent from the factory, so that it misses its hole with certain cards. That or a defective CF card with a missing hole.... Sheesh.
The rule today for the 300D is not to take out the CF card unless absolutely mandatory.