Originally posted by Marc Sabatella No idea how of if it would be possible, but I think you need to tell the long story that makes you think this might be something worth the risk of trying.
The camera's top LCD and VF LCD will just intermittently turn off (and stay off). When this happens all of the camera's other functions are inaccesssible; the wheel doesn't work, the modes don't work, the ev. comp doesn't work, and I can't even change aperture or shutter.
I haven't been able to nail down what is triggering it, but it does seem to pretty much only happen right after the camera is turned on. In other words, if it's good when I turn it on, it's most likely good until I turn it off again.
Sometimes it has failed in the middle of shooting, and very occasionally I have 'seen' it in the process of failing; the top LCD will display garbage and the VF LCD will go dim/blank. If I switch it off at that moment, the displays will be gone when I turn the camera back on.
When it fails, I can sit it down on a table and spend 15 minutes turning it on and off, then come back to it the next day and it will be fine - or, it won't come back on for a week. It's super arbitrary and unpredictable.
I'm quite certain it's not a physical connection problem. I have shaken, twisted, tapped (and sometimes banged!) the camera to get it to work, to no effect. It just comes back when it wants to.
I'm pretty convinced, myself, that it's not a problem on the hardware level.
Is it possible for firmware to become corrupt and cause problems like this?