Is it easy to repair a digital camera? Mine seems to act weird after
I tried using Nimh 1800 types of batteries in it. Now it seems to
take picture just whenever it wants to, and won't obey commands
entered through the pressbuttons.

Sam-

Unless the manual tells you NOT to use rechargeable batteries, it may only be a
coincidence that the problem happened after trying the NiMH batteries.

As far as repairing it, can you figure out how to get into it without messing
it up? If you can, you might find loose connections or notice burned
components. Beyond that, you may need a service manual and/or a custom test
set for troubleshooting.

One thing to try is to remove the batteries and let it set a while. This might
reset the CPU and return everything to normal operation.

If you don't find something simple like this, it may be time to upgrade.

Fred